Finding the Fourth Proportional to 131,112, 180,936.72 and 71,496

Step by Step Solution

1. Step 1: Write the proportion equation
   131,112 : 180,936.72 = 71,496 : x
2. Step 2: Convert to fraction form
   131,112/180,936.72 = 71,496/x
3. Step 3: Cross multiply
   131,112x = 180,936.72 × 71,496
4. Step 4: Simplify right side
   131,112x = 12,936,251,733.12
5. Step 5: Solve for x
   x = 12,936,251,733.12/131,112
6. Step 6: Final answer
   x = 98,665.66