non-concurrent forces

Problem 260
The effect of a certain non-concurrent force system is defined by the following data: ΣF_x = +90 kN, ΣF_y = -60 kN, and ΣM_O = 360 kN·m counterclockwise. Determine the point at which the resultant intersects the x-axis.
 

The resultant of non-concurrent force system is defined according to magnitude, inclination, and position.
 

The magnitude of the resultant can be found as follows

Resultant of a force system is a force or a couple that will have the same effect to the body, both in translation and rotation, if all the forces are removed and replaced by the resultant.