What are the paths to making this much money at such a young age? Having money well into your 50s or 60s is great, but at that point, you have 10-15 more years in the tank and are more focused on your family. Having an exorbitant amount of money while young would be 1000x better. I understand this post seems unrealistic, I don't care.
1. Play the lottery. [not recommended, but shown for completeness]
2. Invest in crypto currencies (we are just after a craw; excellent time to buy).
3. Trade FX/shares/derivatives.
4. Write and sell some software (sell it to a software company or deploy it yourself via SAAS and earn money yourself from end users).
5. Make an invention and patent it; live from the license royalties.
6. Compose a song (either a summer hit or a Christmas song); live from the license royalties.
7. Work (in some capacity), buy a property, fix it up/wait and sell it for more to buy another one, and then several ones (traditional property ladder).
8. Sell something (food, drinks, shoes, ...). One of the richest people I ever met sold sports shoes from the trunk of his car and became a billionaire.
You will not need $100M; $20M-$50M should do (you being slightly less rich avoids some specific kinds of trouble). The question is not so much how to get rich (hard work), but to do it the most fun, elegant, ethical way.
generational wealth is the most common springboard I've seen for "successful" people - but how successful would they have been without daddy's millions?