Finding the Fourth Proportional to 199,751.85, 275,655.69 and 109,107.78

Step by Step Solution

1. Step 1: Write the proportion equation
   199,751.85 : 275,655.69 = 109,107.78 : x
2. Step 2: Convert to fraction form
   199,751.85/275,655.69 = 109,107.78/x
3. Step 3: Cross multiply
   199,751.85x = 275,655.69 × 109,107.78
4. Step 4: Simplify right side
   199,751.85x = 30,076,180,380.27
5. Step 5: Solve for x
   x = 30,076,180,380.27/199,751.85
6. Step 6: Final answer
   x = 150,567.72