Finding the Fourth Proportional to 308,061.50, 425,120.18 and 172,097.40

Step by Step Solution

1. Step 1: Write the proportion equation
   308,061.50 : 425,120.18 = 172,097.40 : x
2. Step 2: Convert to fraction form
   308,061.50/425,120.18 = 172,097.40/x
3. Step 3: Cross multiply
   308,061.50x = 425,120.18 × 172,097.40
4. Step 4: Simplify right side
   308,061.50x = 73,162,078,095.78
5. Step 5: Solve for x
   x = 73,162,078,095.78/308,061.50
6. Step 6: Final answer
   x = 237,491.79