Finding the Fourth Proportional to 359,570.89, 496,217.91 and 198,436.12

Step by Step Solution

1. Step 1: Write the proportion equation
   359,570.89 : 496,217.91 = 198,436.12 : x
2. Step 2: Convert to fraction form
   359,570.89/496,217.91 = 198,436.12/x
3. Step 3: Cross multiply
   359,570.89x = 496,217.91 × 198,436.12
4. Step 4: Simplify right side
   359,570.89x = 98,467,556,734.91
5. Step 5: Solve for x
   x = 98,467,556,734.91/359,570.89
6. Step 6: Final answer
   x = 273,847.41