We can assume here that left and right directions are -X and + X directions respectively
Similarly its perpendicular directions are +Y and -Y i.e. upwards and downwards respectively
So here it is given that
+X direction
- X direction
+ Y direction
- Y direction
Now net force in X direction is required here in this question
So here in X direction there are two forces opposite to each other
so in order to find net force we need to add them vector addition rule
so here



so it requires 38.1 N force towards left