Predicting the price of cryptocurrencies like $ADA (Cardano) is highly speculative and depends on numerous factors, including market sentiment, adoption, technological developments, macroeconomic conditions, and regulatory changes. While it's possible for ADA to reach $5 in the next 90 days, it would require significant positive momentum and favorable conditions.

Here are some factors that could influence ADA's price:

1. Market Sentiment: If the overall cryptocurrency market experiences a bullish trend, ADA could benefit from increased investor interest.

2. Adoption and Partnerships: News of major partnerships, integrations, or increased adoption of Cardano's blockchain could drive the price higher.

3. Technological Developments: Upgrades or new features on the Cardano network, such as the successful implementation of smart contracts or scaling solutions, could boost confidence in the project.

4. Macroeconomic Factors: Global economic conditions, such as inflation, interest rates, and geopolitical events, can impact cryptocurrency prices.

5. Regulatory Environment: Positive regulatory developments or clarity in key markets could encourage investment in ADA.

6. Competition: The performance of competing blockchains like Ethereum, Solana, and others could also influence ADA's price.

While $5 is not impossible, it would represent a significant increase from current levels. As of my knowledge cutoff in October 2023, ADA's price has historically struggled to sustain such high levels, but cryptocurrency markets are highly volatile and unpredictable.

Always do your own research and consider consulting with a financial advisor before making investment decisions. Cryptocurrency investments carry significant risk, and you should only invest what you can afford to lose.