Finding the Fourth Proportional to 83,527.30, 125,550.15 and 81,972.10

Step by Step Solution

1. Step 1: Write the proportion equation
   83,527.30 : 125,550.15 = 81,972.10 : x
2. Step 2: Convert to fraction form
   83,527.30/125,550.15 = 81,972.10/x
3. Step 3: Cross multiply
   83,527.30x = 125,550.15 × 81,972.10
4. Step 4: Simplify right side
   83,527.30x = 10,291,609,450.82
5. Step 5: Solve for x
   x = 10,291,609,450.82/83,527.30
6. Step 6: Final answer
   x = 123,212.52