Finding the Fourth Proportional to 309,654.52, 427,328.22 and 173,718.72

Step by Step Solution

1. Step 1: Write the proportion equation
   309,654.52 : 427,328.22 = 173,718.72 : x
2. Step 2: Convert to fraction form
   309,654.52/427,328.22 = 173,718.72/x
3. Step 3: Cross multiply
   309,654.52x = 427,328.22 × 173,718.72
4. Step 4: Simplify right side
   309,654.52x = 74,234,911,398.28
5. Step 5: Solve for x
   x = 74,234,911,398.28/309,654.52
6. Step 6: Final answer
   x = 239,734.63