Minimize	$f\left(\overrightarrow{x}\right)=0.6224x_1{x}_3{x}_4+1.7781x_2{x}_3^2+3.1661x_1^2{x}_4+19.84x_1^2{x}_3,$
Subject to:	$\left\{\begin{array}{c}\begin{array}{c}{g}_1\left(\overrightarrow{x}\right)=-x_1+0.0193x_3\le 0\\ g_2\left(\overrightarrow{x}\right)=-x_2+0.00954x_3\le 0\end{array}\\ \begin{array}{c}{g}_3\left(\overrightarrow{x}\right)=1296000-{\displaystyle \frac{4}{3}}\pi x_3^3-\pi x_3^2{x}_4\le 0\\ g_4\left(\overrightarrow{x}\right)=x_4-240\le 0\end{array}\end{array}\right.$	(28)
Variable range:	$\left\{\begin{array}{c}\begin{array}{c}0\le x_1\le 99\\ 0\le x_2\le 99\end{array}\\ \begin{array}{c}10\le x_3\le 200\\ 10\le x_4\le 200\end{array}\end{array}\right.$