Finding the Fourth Proportional to 81,256.88, 112,134.76 and 45,447.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,256.88 : 112,134.76 = 45,447.50 : x
2. Step 2: Convert to fraction form
   81,256.88/112,134.76 = 45,447.50/x
3. Step 3: Cross multiply
   81,256.88x = 112,134.76 × 45,447.50
4. Step 4: Simplify right side
   81,256.88x = 5,096,244,505.10
5. Step 5: Solve for x
   x = 5,096,244,505.10/81,256.88
6. Step 6: Final answer
   x = 62,717.70