Finding the Fourth Proportional to 124,810.09, 172,217.80 and 71,096.15

Step by Step Solution

1. Step 1: Write the proportion equation
   124,810.09 : 172,217.80 = 71,096.15 : x
2. Step 2: Convert to fraction form
   124,810.09/172,217.80 = 71,096.15/x
3. Step 3: Cross multiply
   124,810.09x = 172,217.80 × 71,096.15
4. Step 4: Simplify right side
   124,810.09x = 12,244,022,541.47
5. Step 5: Solve for x
   x = 12,244,022,541.47/124,810.09
6. Step 6: Final answer
   x = 98,101.22