Finding the Fourth Proportional to 81,505.20, 112,481.82 and 45,693.48

Step by Step Solution

1. Step 1: Write the proportion equation
   81,505.20 : 112,481.82 = 45,693.48 : x
2. Step 2: Convert to fraction form
   81,505.20/112,481.82 = 45,693.48/x
3. Step 3: Cross multiply
   81,505.20x = 112,481.82 × 45,693.48
4. Step 4: Simplify right side
   81,505.20x = 5,139,685,792.53
5. Step 5: Solve for x
   x = 5,139,685,792.53/81,505.20
6. Step 6: Final answer
   x = 63,059.61