Finding the Fourth Proportional to 359,407.89, 495,981.50 and 198,272.97

Step by Step Solution

1. Step 1: Write the proportion equation
   359,407.89 : 495,981.50 = 198,272.97 : x
2. Step 2: Convert to fraction form
   359,407.89/495,981.50 = 198,272.97/x
3. Step 3: Cross multiply
   359,407.89x = 495,981.50 × 198,272.97
4. Step 4: Simplify right side
   359,407.89x = 98,339,724,078.69
5. Step 5: Solve for x
   x = 98,339,724,078.69/359,407.89
6. Step 6: Final answer
   x = 273,615.93