Finding the Fourth Proportional to 81,269.88, 112,155.42 and 45,459.78

Step by Step Solution

1. Step 1: Write the proportion equation
   81,269.88 : 112,155.42 = 45,459.78 : x
2. Step 2: Convert to fraction form
   81,269.88/112,155.42 = 45,459.78/x
3. Step 3: Cross multiply
   81,269.88x = 112,155.42 × 45,459.78
4. Step 4: Simplify right side
   81,269.88x = 5,098,560,719.01
5. Step 5: Solve for x
   x = 5,098,560,719.01/81,269.88
6. Step 6: Final answer
   x = 62,736.17