Finding the Fourth Proportional to 199,228.72, 274,935 and 109,804.72

Step by Step Solution

1. Step 1: Write the proportion equation
   199,228.72 : 274,935 = 109,804.72 : x
2. Step 2: Convert to fraction form
   199,228.72/274,935 = 109,804.72/x
3. Step 3: Cross multiply
   199,228.72x = 274,935 × 109,804.72
4. Step 4: Simplify right side
   199,228.72x = 30,189,160,693.20
5. Step 5: Solve for x
   x = 30,189,160,693.20/199,228.72
6. Step 6: Final answer
   x = 151,530.16