Finding the Fourth Proportional to 71,697.30, 107,562.96 and 21,780.24

Step by Step Solution

1. Step 1: Write the proportion equation
   71,697.30 : 107,562.96 = 21,780.24 : x
2. Step 2: Convert to fraction form
   71,697.30/107,562.96 = 21,780.24/x
3. Step 3: Cross multiply
   71,697.30x = 107,562.96 × 21,780.24
4. Step 4: Simplify right side
   71,697.30x = 2,342,747,083.91
5. Step 5: Solve for x
   x = 2,342,747,083.91/71,697.30
6. Step 6: Final answer
   x = 32,675.53