Finding the Fourth Proportional to 90,422.73, 134,781.17 and 83,694.06

Step by Step Solution

1. Step 1: Write the proportion equation
   90,422.73 : 134,781.17 = 83,694.06 : x
2. Step 2: Convert to fraction form
   90,422.73/134,781.17 = 83,694.06/x
3. Step 3: Cross multiply
   90,422.73x = 134,781.17 × 83,694.06
4. Step 4: Simplify right side
   90,422.73x = 11,280,382,910.38
5. Step 5: Solve for x
   x = 11,280,382,910.38/90,422.73
6. Step 6: Final answer
   x = 124,751.63