Answer
$F_4\lt F_3\lt F_1\lt F_2$
Work Step by Step
We know that
$P=\frac{W}{t}$
For $F_1$
$P=\frac{5}{10}=0.5W$
For $F_2$
$P=\frac{3}{5}=0.6W$
For $F_3$
$P=\frac{6}{18}=0.33W$
For $F_4$
$P=\frac{25}{125}=0.2W$
Now we can rank these forces in order of increasing power they produce as
$F_4\lt F_3\lt F_1\lt F_2$