Finding the Fourth Proportional to 424,517.31, 585,917.55 and 243,350.79

Step by Step Solution

1. Step 1: Write the proportion equation
   424,517.31 : 585,917.55 = 243,350.79 : x
2. Step 2: Convert to fraction form
   424,517.31/585,917.55 = 243,350.79/x
3. Step 3: Cross multiply
   424,517.31x = 585,917.55 × 243,350.79
4. Step 4: Simplify right side
   424,517.31x = 142,583,498,667.37
5. Step 5: Solve for x
   x = 142,583,498,667.37/424,517.31
6. Step 6: Final answer
   x = 335,872.05