Finding the Fourth Proportional to 359,499.15, 496,111.49 and 198,360.18

Step by Step Solution

1. Step 1: Write the proportion equation
   359,499.15 : 496,111.49 = 198,360.18 : x
2. Step 2: Convert to fraction form
   359,499.15/496,111.49 = 198,360.18/x
3. Step 3: Cross multiply
   359,499.15x = 496,111.49 × 198,360.18
4. Step 4: Simplify right side
   359,499.15x = 98,408,763,464.67
5. Step 5: Solve for x
   x = 98,408,763,464.67/359,499.15
6. Step 6: Final answer
   x = 273,738.51