President Donald Trump is being accompanied on his key trip to China by an entourage of the super-rich, boasting a combined net worth in the hundreds of billions of dollars.​ The list of tech and financial industry titans joining the commander-in-chief during his summit with China’s President Xi Jinping includes Elon Musk , BlackRock CEO Larry Fink , and Apple CEO Tim Cook . Musk posted from Air Force One on Wednesday that he was on his way to Beijing, and was pictured greeting dignitaries on the red carpet when the plane landed that evening. Trump earlier confirmed a number of high-profile attendees in a lengthy post on Truth Social , albeit referring to Cook as “Tim Apple” in the process.…