Bill Gates, the world's second-richest person, has an estimated net worth of $95.7 billion, according to Forbes. While he indulges in a few luxuries, they only make up a fraction of his fortune. He mainly spends his billions on charity through the Bill and Melinda Gates Foundation, and plans to give away most of his fortune. Bill Gates, cofounder of Microsoft, is the world's second-richest person, sitting on an estimated net worth of $95.7 billion, according to Forbes. It's hard to imagine what to do with that amount of money, but Gates knows how to make the most of it.