Complex sentence: Heath soon became insolvent, and William Boeing, for whom Heath was building a hugely expensive and luxurious yacht, bought the shipyard and land for ten dollars, in exchange for Boeing's acceptance of Heath's debts.
Split into simpler sentences: Heath soon became insolvent, and William Boeing, for whom Heath was building a hugely expensive and luxurious yacht. Boeing bought the shipyard and land for 10 $, in exchange for Boeing's acceptance of Heath's debts.