1. Stating the problem: Evaluate the expression $317.200 - (4.200.000 \times 0,032) \times 1,72$. 2. Note that the commas in numbers are decimal separators, so rewrite the expression as $317.200 - (4.200.000 \times 0.032) \times 1.72$. 3. Calculate the multiplication inside the parentheses first: $4.200.000 \times 0.032 = 134.400$. 4. Multiply the result by $1.72$: $134.400 \times 1.72 = 231.168$. 5. Subtract this from $317.200$: $317.200 - 231.168 = 86.032$. 6. Final answer: $86.032$.