Finding the Fourth Proportional to 87,951.88, 131,926.71 and 21,392.05

Step by Step Solution

1. Step 1: Write the proportion equation
   87,951.88 : 131,926.71 = 21,392.05 : x
2. Step 2: Convert to fraction form
   87,951.88/131,926.71 = 21,392.05/x
3. Step 3: Cross multiply
   87,951.88x = 131,926.71 × 21,392.05
4. Step 4: Simplify right side
   87,951.88x = 2,822,182,744.34
5. Step 5: Solve for x
   x = 2,822,182,744.34/87,951.88
6. Step 6: Final answer
   x = 32,087.81