Finding the Fourth Proportional to 172,456.10, 258,979.35 and 93,724.10

Step by Step Solution

1. Step 1: Write the proportion equation
   172,456.10 : 258,979.35 = 93,724.10 : x
2. Step 2: Convert to fraction form
   172,456.10/258,979.35 = 93,724.10/x
3. Step 3: Cross multiply
   172,456.10x = 258,979.35 × 93,724.10
4. Step 4: Simplify right side
   172,456.10x = 24,272,606,497.34
5. Step 5: Solve for x
   x = 24,272,606,497.34/172,456.10
6. Step 6: Final answer
   x = 140,746.58