Finding the Fourth Proportional to 81,504.72, 112,469.98 and 45,689.86

Step by Step Solution

1. Step 1: Write the proportion equation
   81,504.72 : 112,469.98 = 45,689.86 : x
2. Step 2: Convert to fraction form
   81,504.72/112,469.98 = 45,689.86/x
3. Step 3: Cross multiply
   81,504.72x = 112,469.98 × 45,689.86
4. Step 4: Simplify right side
   81,504.72x = 5,138,737,640.40
5. Step 5: Solve for x
   x = 5,138,737,640.40/81,504.72
6. Step 6: Final answer
   x = 63,048.34