[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
The missing angle in the given problem is 4x, and value of x is given ~ ( x = 19 )
So, let's just plug the value of x to find the value of Angle ~
[tex]\qquad \tt \dashrightarrow \:4x = (4 \times 19) = 76 \degree[/tex]
