Finding the Fourth Proportional to 83,507.72, 115,086.10 and 59,309.74

Step by Step Solution

1. Step 1: Write the proportion equation
   83,507.72 : 115,086.10 = 59,309.74 : x
2. Step 2: Convert to fraction form
   83,507.72/115,086.10 = 59,309.74/x
3. Step 3: Cross multiply
   83,507.72x = 115,086.10 × 59,309.74
4. Step 4: Simplify right side
   83,507.72x = 6,825,727,349.30
5. Step 5: Solve for x
   x = 6,825,727,349.30/83,507.72
6. Step 6: Final answer
   x = 81,737.68