Finding the Fourth Proportional to 125,713.83, 173,435.61 and 71,969.88

Step by Step Solution

1. Step 1: Write the proportion equation
   125,713.83 : 173,435.61 = 71,969.88 : x
2. Step 2: Convert to fraction form
   125,713.83/173,435.61 = 71,969.88/x
3. Step 3: Cross multiply
   125,713.83x = 173,435.61 × 71,969.88
4. Step 4: Simplify right side
   125,713.83x = 12,482,140,039.43
5. Step 5: Solve for x
   x = 12,482,140,039.43/125,713.83
6. Step 6: Final answer
   x = 99,290.11