Finding the Fourth Proportional to 81,200.58, 112,059.29 and 45,392.10

Step by Step Solution

1. Step 1: Write the proportion equation
   81,200.58 : 112,059.29 = 45,392.10 : x
2. Step 2: Convert to fraction form
   81,200.58/112,059.29 = 45,392.10/x
3. Step 3: Cross multiply
   81,200.58x = 112,059.29 × 45,392.10
4. Step 4: Simplify right side
   81,200.58x = 5,086,607,008.70
5. Step 5: Solve for x
   x = 5,086,607,008.70/81,200.58
6. Step 6: Final answer
   x = 62,642.49