i trust your want to find out what x is,

you need the sine rule which is

a/sin A = b/sin B = c/sin C

we have numbers for c, sin C, b and sin B (its x) so as b/sin B = c/sin C you just rearrange the algebra to get sin B, then it should be easy from their but i will show you anyway

80.2/sin 67 =56.3/sin x

80.2sin x = 56.3sin 67

sin x = 56.3 sin 67/80.2

x = inverse sin (56.3sin67/80.2)

x = 40.3 degrees.