Finding the Fourth Proportional to 131,681.57, 181,719.33 and 71,250.89

Step by Step Solution

1. Step 1: Write the proportion equation
   131,681.57 : 181,719.33 = 71,250.89 : x
2. Step 2: Convert to fraction form
   131,681.57/181,719.33 = 71,250.89/x
3. Step 3: Cross multiply
   131,681.57x = 181,719.33 × 71,250.89
4. Step 4: Simplify right side
   131,681.57x = 12,947,663,992.70
5. Step 5: Solve for x
   x = 12,947,663,992.70/131,681.57
6. Step 6: Final answer
   x = 98,325.56