Finding the Fourth Proportional to 123,245.75, 170,085.12 and 75,501.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,245.75 : 170,085.12 = 75,501.72 : x
2. Step 2: Convert to fraction form
   123,245.75/170,085.12 = 75,501.72/x
3. Step 3: Cross multiply
   123,245.75x = 170,085.12 × 75,501.72
4. Step 4: Simplify right side
   123,245.75x = 12,841,718,823.28
5. Step 5: Solve for x
   x = 12,841,718,823.28/123,245.75
6. Step 6: Final answer
   x = 104,196.04