Finding the Fourth Proportional to 316,436.38, 436,665.35 and 173,168.73

Step by Step Solution

1. Step 1: Write the proportion equation
   316,436.38 : 436,665.35 = 173,168.73 : x
2. Step 2: Convert to fraction form
   316,436.38/436,665.35 = 173,168.73/x
3. Step 3: Cross multiply
   316,436.38x = 436,665.35 × 173,168.73
4. Step 4: Simplify right side
   316,436.38x = 75,616,784,527.43
5. Step 5: Solve for x
   x = 75,616,784,527.43/316,436.38
6. Step 6: Final answer
   x = 238,963.63