Finding the Fourth Proportional to 81,724.24, 112,790.82 and 45,917.02

Step by Step Solution

1. Step 1: Write the proportion equation
   81,724.24 : 112,790.82 = 45,917.02 : x
2. Step 2: Convert to fraction form
   81,724.24/112,790.82 = 45,917.02/x
3. Step 3: Cross multiply
   81,724.24x = 112,790.82 × 45,917.02
4. Step 4: Simplify right side
   81,724.24x = 5,179,018,337.76
5. Step 5: Solve for x
   x = 5,179,018,337.76/81,724.24
6. Step 6: Final answer
   x = 63,371.88