If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1.49*(4*2768+276)*(320/x) = 73044 // - 73044
1.49*(4*2768+276)*(320/x)-73044 = 0
5410726.4*x^-1 = 73044 // : 5410726.4
x^-1 = 0.01349985
-1 < 0
1/(x^1) = 0.01349985 // * x^1
1 = 0.01349985*x^1 // : 0.01349985
74.07489713 = x^1
x = 74.07489713
x = 74.07489713
| 6a=12/5 | | 1.49*((1109*4)+180)*(212/x)=19684 | | b-7=5 | | 7/4=d+1 | | 4+a=16/5 | | -4/7m=-32/7 | | b-2/9=-103/99 | | a+2/5=62/5 | | 1.49*((1109*4)+(180*x))*(212/100)=19684 | | w-7=-6 | | -8=m-5 | | n+3=-9 | | a-3/10=-33/10 | | d-3/5=-3/2 | | -1/6+x=41/6 | | 1.49*((1109*x)+180)*(212/100)=19684 | | d/4=-2/3 | | d+4=59/12 | | n+1/10=91/10 | | a+7/9=13/9 | | m+1=20/11 | | t+6=9 | | 1.49*((1109*4)+180)*(212/100)*x=19684 | | -1/2+k=-7/5 | | b/5=6 | | a+1/9=19/9 | | 1.49*((2768*4)+276)*(320/100)*x=73044 | | -3/8+d=5/8 | | n-3=-1 | | 33/5=b+7 | | n/3=-5 | | 31/3=t-2/3 |