Finding the Fourth Proportional to 81,324.72, 112,230.24 and 45,520.88

Step by Step Solution

1. Step 1: Write the proportion equation
   81,324.72 : 112,230.24 = 45,520.88 : x
2. Step 2: Convert to fraction form
   81,324.72/112,230.24 = 45,520.88/x
3. Step 3: Cross multiply
   81,324.72x = 112,230.24 × 45,520.88
4. Step 4: Simplify right side
   81,324.72x = 5,108,819,287.41
5. Step 5: Solve for x
   x = 5,108,819,287.41/81,324.72
6. Step 6: Final answer
   x = 62,820.00