By Daniel Chavkin The Lakers star reportedly hit a benchmark as a businessman. View the original article to see embedded media. LeBron James has had a successful career both on and off the court, and the Lakers star has reached a new milestone. Forbes’s Chase Peterson-Withorn estimates that James has officially become the first-ever billionaire NBA player. James’s net worth comes from a variety of investments, headlined by a reported $300 million in The Spring Hill Company, which holds three of James’s companies into one. Over the years, he’s also primarily invested in the Fenway Sports Group,…