Finding the Fourth Proportional to 124,719.04, 172,105.74 and 71,003.86

Step by Step Solution

1. Step 1: Write the proportion equation
   124,719.04 : 172,105.74 = 71,003.86 : x
2. Step 2: Convert to fraction form
   124,719.04/172,105.74 = 71,003.86/x
3. Step 3: Cross multiply
   124,719.04x = 172,105.74 × 71,003.86
4. Step 4: Simplify right side
   124,719.04x = 12,220,171,868.16
5. Step 5: Solve for x
   x = 12,220,171,868.16/124,719.04
6. Step 6: Final answer
   x = 97,981.61