The net worth of the world's richest man, Elon Musk, dropped by $10 billion (nearly ₹83,000 crore) after he finalised the $44-billion deal to acquire Twitter, Bloomberg said. The latest wealth drop brought Musk's total losses this year to $66 billion, it said. Musk used all his liquid assets to complete the purchase and his liabilities rose by $4.6 billion.