Finding the Fourth Proportional to 359,571.69, 496,208.43 and 198,426.71

Step by Step Solution

1. Step 1: Write the proportion equation
   359,571.69 : 496,208.43 = 198,426.71 : x
2. Step 2: Convert to fraction form
   359,571.69/496,208.43 = 198,426.71/x
3. Step 3: Cross multiply
   359,571.69x = 496,208.43 × 198,426.71
4. Step 4: Simplify right side
   359,571.69x = 98,461,007,479.69
5. Step 5: Solve for x
   x = 98,461,007,479.69/359,571.69
6. Step 6: Final answer
   x = 273,828.59