\[ y'(x) \left (x^2 y(x) \sin (x y(x))-4 x\right )-y(x)+x y(x)^2 \sin (x y(x))=0 \] ✓ Mathematica : cpu = 0.318033 (sec), leaf count = 23
\[\text {Solve}[-4 \log (y(x))-\cos (x y(x))-\log (x)=c_1,y(x)]\] ✓ Maple : cpu = 0.207 (sec), leaf count = 23
\[ \left \{ y \left ( x \right ) ={\frac {1}{x}{\it RootOf} \left ( -{\it \_Z}+{{\rm e}^{-{\frac {\cos \left ( {\it \_Z} \right ) }{4}}}}{\it \_C1}\,{x}^{{\frac {3}{4}}} \right ) } \right \} \]