Finding the Fourth Proportional to 107,828.20, 148,134.17 and 88,906.60

Step by Step Solution

1. Step 1: Write the proportion equation
   107,828.20 : 148,134.17 = 88,906.60 : x
2. Step 2: Convert to fraction form
   107,828.20/148,134.17 = 88,906.60/x
3. Step 3: Cross multiply
   107,828.20x = 148,134.17 × 88,906.60
4. Step 4: Simplify right side
   107,828.20x = 13,170,105,398.52
5. Step 5: Solve for x
   x = 13,170,105,398.52/107,828.20
6. Step 6: Final answer
   x = 122,139.71