Express in components

(I understand that north of east means 30 degree above the east line)

(I understand that west of north means 60 degree to the left of north line).

Force 1)75 i

Force 2)50*cos(30)i+50*sin(30)j

Force 3)-40*cos(60)i+40*sin(60)

Force 4)F_xi+F_yj

Thus, sum of components,

75+50*cos(30)-40*cos(60)+F_x=0

50*sin(30)+40*sin(60)+F_y=0

You can solve.