Finding the Fourth Proportional to 315,870.98, 435,902.73 and 172,632.74

Step by Step Solution

1. Step 1: Write the proportion equation
   315,870.98 : 435,902.73 = 172,632.74 : x
2. Step 2: Convert to fraction form
   315,870.98/435,902.73 = 172,632.74/x
3. Step 3: Cross multiply
   315,870.98x = 435,902.73 × 172,632.74
4. Step 4: Simplify right side
   315,870.98x = 75,251,082,653.38
5. Step 5: Solve for x
   x = 75,251,082,653.38/315,870.98
6. Step 6: Final answer
   x = 238,233.61