A closed system consists of 4 objects. Initially, object A has a charge of -200 C, object B has a charge of 134 C, object C has a charge of-54 C, and object D has a charge of146 C. After 219s have passed, object A has a -108 C charge, object B has a 46 C charge; and object C has a -194 C charge. How much charge does object D have?