Finding the Fourth Proportional to 126,111.78, 174,105.54 and 83,728.26

Step by Step Solution

1. Step 1: Write the proportion equation
   126,111.78 : 174,105.54 = 83,728.26 : x
2. Step 2: Convert to fraction form
   126,111.78/174,105.54 = 83,728.26/x
3. Step 3: Cross multiply
   126,111.78x = 174,105.54 × 83,728.26
4. Step 4: Simplify right side
   126,111.78x = 14,577,553,920.56
5. Step 5: Solve for x
   x = 14,577,553,920.56/126,111.78
6. Step 6: Final answer
   x = 115,592.33