Finding the Fourth Proportional to 81,308.88, 112,210.98 and 45,498.60

Step by Step Solution

1. Step 1: Write the proportion equation
   81,308.88 : 112,210.98 = 45,498.60 : x
2. Step 2: Convert to fraction form
   81,308.88/112,210.98 = 45,498.60/x
3. Step 3: Cross multiply
   81,308.88x = 112,210.98 × 45,498.60
4. Step 4: Simplify right side
   81,308.88x = 5,105,442,494.63
5. Step 5: Solve for x
   x = 5,105,442,494.63/81,308.88
6. Step 6: Final answer
   x = 62,790.71