Finding the Fourth Proportional to 81,315.72, 112,233.24 and 49,494.96

Step by Step Solution

1. Step 1: Write the proportion equation
   81,315.72 : 112,233.24 = 49,494.96 : x
2. Step 2: Convert to fraction form
   81,315.72/112,233.24 = 49,494.96/x
3. Step 3: Cross multiply
   81,315.72x = 112,233.24 × 49,494.96
4. Step 4: Simplify right side
   81,315.72x = 5,554,979,724.47
5. Step 5: Solve for x
   x = 5,554,979,724.47/81,315.72
6. Step 6: Final answer
   x = 68,313.72