Finding the Fourth Proportional to 124,875.30, 172,320.54 and 71,159.88

Step by Step Solution

1. Step 1: Write the proportion equation
   124,875.30 : 172,320.54 = 71,159.88 : x
2. Step 2: Convert to fraction form
   124,875.30/172,320.54 = 71,159.88/x
3. Step 3: Cross multiply
   124,875.30x = 172,320.54 × 71,159.88
4. Step 4: Simplify right side
   124,875.30x = 12,262,308,947.94
5. Step 5: Solve for x
   x = 12,262,308,947.94/124,875.30
6. Step 6: Final answer
   x = 98,196.43