Finding the Fourth Proportional to 125,002.60, 172,499.18 and 71,304.77

Step by Step Solution

1. Step 1: Write the proportion equation
   125,002.60 : 172,499.18 = 71,304.77 : x
2. Step 2: Convert to fraction form
   125,002.60/172,499.18 = 71,304.77/x
3. Step 3: Cross multiply
   125,002.60x = 172,499.18 × 71,304.77
4. Step 4: Simplify right side
   125,002.60x = 12,300,014,429.81
5. Step 5: Solve for x
   x = 12,300,014,429.81/125,002.60
6. Step 6: Final answer
   x = 98,398.07