Finding the Fourth Proportional to 87,926.57, 131,773.21 and 72,530.09

Step by Step Solution

1. Step 1: Write the proportion equation
   87,926.57 : 131,773.21 = 72,530.09 : x
2. Step 2: Convert to fraction form
   87,926.57/131,773.21 = 72,530.09/x
3. Step 3: Cross multiply
   87,926.57x = 131,773.21 × 72,530.09
4. Step 4: Simplify right side
   87,926.57x = 9,557,522,780.89
5. Step 5: Solve for x
   x = 9,557,522,780.89/87,926.57
6. Step 6: Final answer
   x = 108,698.92