Answer:
Net force is 250 N and it act in right direction.
Step-by-step explanation:
It is given that, four forces are being applied to move an object to the left. Let the force acting on the left is F. Force 1 is pushing to the right at 200 N. Force 2 is pushing to the left at 500 N. Force 3 is pushing to the right at 100 N. Force 4 is pushing to the left at 50 N.
So, net force acting on left is : F + 500 N +50 N
Net force acting right is : 200 N + 100 N
i.e.

F = -250 N
So, the net force acting on the object is 250 N in the right direction.