\[ x y^{(4)}(x)+5 y^{(3)}(x)-24=0 \] ✓ Mathematica : cpu = 0.0191738 (sec), leaf count = 34
DSolve[-24 + 5*Derivative[3][y][x] + x*Derivative[4][y][x] == 0,y[x],x]
\[\left \{\left \{y(x)\to \frac {4 x^3}{5}+c_4 x^2-\frac {c_1}{24 x^2}+c_3 x+c_2\right \}\right \}\] ✓ Maple : cpu = 0.027 (sec), leaf count = 26
dsolve(x*diff(diff(diff(diff(y(x),x),x),x),x)+5*diff(diff(diff(y(x),x),x),x)-24=0,y(x))
\[y \left (x \right ) = \frac {x^{2} c_{2}}{2}+\frac {4 x^{3}}{5}-\frac {c_{1}}{24 x^{2}}+x c_{3}+c_{4}\]