Finding the Fourth Proportional to 361,971.27, 499,510.83 and 198,627.28

Step by Step Solution

1. Step 1: Write the proportion equation
   361,971.27 : 499,510.83 = 198,627.28 : x
2. Step 2: Convert to fraction form
   361,971.27/499,510.83 = 198,627.28/x
3. Step 3: Cross multiply
   361,971.27x = 499,510.83 × 198,627.28
4. Step 4: Simplify right side
   361,971.27x = 99,216,476,989.52
5. Step 5: Solve for x
   x = 99,216,476,989.52/361,971.27
6. Step 6: Final answer
   x = 274,100.42