Finding the Fourth Proportional to 83,175.30, 124,568.55 and 81,504.90

Step by Step Solution

1. Step 1: Write the proportion equation
   83,175.30 : 124,568.55 = 81,504.90 : x
2. Step 2: Convert to fraction form
   83,175.30/124,568.55 = 81,504.90/x
3. Step 3: Cross multiply
   83,175.30x = 124,568.55 × 81,504.90
4. Step 4: Simplify right side
   83,175.30x = 10,152,947,210.90
5. Step 5: Solve for x
   x = 10,152,947,210.90/83,175.30
6. Step 6: Final answer
   x = 122,066.85