Finding the Fourth Proportional to 333,853.71, 499,665.17 and 198,478.41

Step by Step Solution

1. Step 1: Write the proportion equation
   333,853.71 : 499,665.17 = 198,478.41 : x
2. Step 2: Convert to fraction form
   333,853.71/499,665.17 = 198,478.41/x
3. Step 3: Cross multiply
   333,853.71x = 499,665.17 × 198,478.41
4. Step 4: Simplify right side
   333,853.71x = 99,172,747,481.59
5. Step 5: Solve for x
   x = 99,172,747,481.59/333,853.71
6. Step 6: Final answer
   x = 297,054.50