Finding the Fourth Proportional to 81,092.46, 111,960.25 and 72,579.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,092.46 : 111,960.25 = 72,579.82 : x
2. Step 2: Convert to fraction form
   81,092.46/111,960.25 = 72,579.82/x
3. Step 3: Cross multiply
   81,092.46x = 111,960.25 × 72,579.82
4. Step 4: Simplify right side
   81,092.46x = 8,126,054,792.16
5. Step 5: Solve for x
   x = 8,126,054,792.16/81,092.46
6. Step 6: Final answer
   x = 100,207.28