Finding the Fourth Proportional to 424,443.25, 585,814.89 and 243,276.61

Step by Step Solution

1. Step 1: Write the proportion equation
   424,443.25 : 585,814.89 = 243,276.61 : x
2. Step 2: Convert to fraction form
   424,443.25/585,814.89 = 243,276.61/x
3. Step 3: Cross multiply
   424,443.25x = 585,814.89 × 243,276.61
4. Step 4: Simplify right side
   424,443.25x = 142,515,060,526.72
5. Step 5: Solve for x
   x = 142,515,060,526.72/424,443.25
6. Step 6: Final answer
   x = 335,769.41