Finding the Fourth Proportional to 315,792.69, 435,788.71 and 172,549.65

Step by Step Solution

1. Step 1: Write the proportion equation
   315,792.69 : 435,788.71 = 172,549.65 : x
2. Step 2: Convert to fraction form
   315,792.69/435,788.71 = 172,549.65/x
3. Step 3: Cross multiply
   315,792.69x = 435,788.71 × 172,549.65
4. Step 4: Simplify right side
   315,792.69x = 75,195,189,384.45
5. Step 5: Solve for x
   x = 75,195,189,384.45/315,792.69
6. Step 6: Final answer
   x = 238,115.67