Finding the Fourth Proportional to 199,648.38, 275,520.78 and 113,619.69

Step by Step Solution

1. Step 1: Write the proportion equation
   199,648.38 : 275,520.78 = 113,619.69 : x
2. Step 2: Convert to fraction form
   199,648.38/275,520.78 = 113,619.69/x
3. Step 3: Cross multiply
   199,648.38x = 275,520.78 × 113,619.69
4. Step 4: Simplify right side
   199,648.38x = 31,304,585,612.16
5. Step 5: Solve for x
   x = 31,304,585,612.16/199,648.38
6. Step 6: Final answer
   x = 156,798.60