Coinspeaker Elon Musk Becomes World’s Fourth-Richest Person as Tesla Stock Hits New Record HighHaving become the fourth-richest person in the world, Musk is remaining behind Facebook’s Mark Zuckerberg ($99 billion), Microsoft’s Bill Gates ($121 billion), and Amazon’s Jeff Bezos ($188 billion).Elon Musk Becomes World’s Fourth-Richest Person as Tesla Stock Hits New Record High