Chords UV, WX, and YZ of a circle are parallel. The distance between chords UV and WX is 4, and the distance between chords WX and

Chords UV, WX, and YZ of a circle are parallel. The distance between chords UV and WX is 4, and the distance between chords WX and YZ is also 4. If UV = 78 and YZ = 50, then find WX.

 

Thank you! (pls include steps!)