According to the meaning of the question: 8000x+4 = 176002x.

Solution: x = 200.

It is verified that x=200 is the solution of the original equation.

∴ The profit of this business in clothing store = 58× (200+400)-(17600+8000) = 9200 (yuan) > 0.

A: This clothing store is profitable, with a profit of 9200 yuan.