Finding the Fourth Proportional to 199,665.91, 275,540.28 and 109,022.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,665.91 : 275,540.28 = 109,022.50 : x
2. Step 2: Convert to fraction form
   199,665.91/275,540.28 = 109,022.50/x
3. Step 3: Cross multiply
   199,665.91x = 275,540.28 × 109,022.50
4. Step 4: Simplify right side
   199,665.91x = 30,040,090,176.30
5. Step 5: Solve for x
   x = 30,040,090,176.30/199,665.91
6. Step 6: Final answer
   x = 150,451.77