Finding the Fourth Proportional to 498,204, 687,832.56 and 319,667.04

Step by Step Solution

1. Step 1: Write the proportion equation
   498,204 : 687,832.56 = 319,667.04 : x
2. Step 2: Convert to fraction form
   498,204/687,832.56 = 319,667.04/x
3. Step 3: Cross multiply
   498,204x = 687,832.56 × 319,667.04
4. Step 4: Simplify right side
   498,204x = 219,877,398,470.82
5. Step 5: Solve for x
   x = 219,877,398,470.82/498,204
6. Step 6: Final answer
   x = 441,340.09