Answer: its total contribution margin should be closest to $ 266,800.
Explanation:
Contribution = (Sales )+ (Variable expenses)
= $180,000+ $81,000
= $261,000
Contribution margin ratio = Contribution divided by Sales
= [tex]\dfrac{261000}{180000}[/tex]
= 1.45
Now Contrbution for 4,600 units = [tex]\dfrac{Sales\ for \ 4500\ units\times 4600}{4500}\times 1.45[/tex]
[tex]=\dfrac{180000\times4600}{4500}\times1.45\\\\\\=266800[/tex]
its total contribution margin should be closest to $ 266,800.