Finding the Fourth Proportional to 125,054.75, 172,559.33 and 71,336.55

Step by Step Solution

1. Step 1: Write the proportion equation
   125,054.75 : 172,559.33 = 71,336.55 : x
2. Step 2: Convert to fraction form
   125,054.75/172,559.33 = 71,336.55/x
3. Step 3: Cross multiply
   125,054.75x = 172,559.33 × 71,336.55
4. Step 4: Simplify right side
   125,054.75x = 12,309,786,915.83
5. Step 5: Solve for x
   x = 12,309,786,915.83/125,054.75
6. Step 6: Final answer
   x = 98,435.18