Finding the Fourth Proportional to 101,150.92, 139,654.02 and 90,522.28

Step by Step Solution

1. Step 1: Write the proportion equation
   101,150.92 : 139,654.02 = 90,522.28 : x
2. Step 2: Convert to fraction form
   101,150.92/139,654.02 = 90,522.28/x
3. Step 3: Cross multiply
   101,150.92x = 139,654.02 × 90,522.28
4. Step 4: Simplify right side
   101,150.92x = 12,641,800,301.57
5. Step 5: Solve for x
   x = 12,641,800,301.57/101,150.92
6. Step 6: Final answer
   x = 124,979.59