Finding the Fourth Proportional to 359,766.33, 496,478.27 and 198,621.69

Step by Step Solution

1. Step 1: Write the proportion equation
   359,766.33 : 496,478.27 = 198,621.69 : x
2. Step 2: Convert to fraction form
   359,766.33/496,478.27 = 198,621.69/x
3. Step 3: Cross multiply
   359,766.33x = 496,478.27 × 198,621.69
4. Step 4: Simplify right side
   359,766.33x = 98,611,353,532.23
5. Step 5: Solve for x
   x = 98,611,353,532.23/359,766.33
6. Step 6: Final answer
   x = 274,098.34