Finding the Fourth Proportional to 199,928.52, 275,908.78 and 109,290.64

Step by Step Solution

1. Step 1: Write the proportion equation
   199,928.52 : 275,908.78 = 109,290.64 : x
2. Step 2: Convert to fraction form
   199,928.52/275,908.78 = 109,290.64/x
3. Step 3: Cross multiply
   199,928.52x = 275,908.78 × 109,290.64
4. Step 4: Simplify right side
   199,928.52x = 30,154,247,147.82
5. Step 5: Solve for x
   x = 30,154,247,147.82/199,928.52
6. Step 6: Final answer
   x = 150,825.14