Finding the Fourth Proportional to 309,393.01, 426,979.83 and 173,470.96

Step by Step Solution

1. Step 1: Write the proportion equation
   309,393.01 : 426,979.83 = 173,470.96 : x
2. Step 2: Convert to fraction form
   309,393.01/426,979.83 = 173,470.96/x
3. Step 3: Cross multiply
   309,393.01x = 426,979.83 × 173,470.96
4. Step 4: Simplify right side
   309,393.01x = 74,068,601,010.74
5. Step 5: Solve for x
   x = 74,068,601,010.74/309,393.01
6. Step 6: Final answer
   x = 239,399.72