Finding the Fourth Proportional to 131,145, 180,980.10 and 71,529

Step by Step Solution

1. Step 1: Write the proportion equation
   131,145 : 180,980.10 = 71,529 : x
2. Step 2: Convert to fraction form
   131,145/180,980.10 = 71,529/x
3. Step 3: Cross multiply
   131,145x = 180,980.10 × 71,529
4. Step 4: Simplify right side
   131,145x = 12,945,325,572.90
5. Step 5: Solve for x
   x = 12,945,325,572.90/131,145
6. Step 6: Final answer
   x = 98,710.02