Finding the Fourth Proportional to 87,892.69, 131,839.87 and 21,333.42

Step by Step Solution

1. Step 1: Write the proportion equation
   87,892.69 : 131,839.87 = 21,333.42 : x
2. Step 2: Convert to fraction form
   87,892.69/131,839.87 = 21,333.42/x
3. Step 3: Cross multiply
   87,892.69x = 131,839.87 × 21,333.42
4. Step 4: Simplify right side
   87,892.69x = 2,812,595,702.39
5. Step 5: Solve for x
   x = 2,812,595,702.39/87,892.69
6. Step 6: Final answer
   x = 32,000.34