Finding the Fourth Proportional to 196,791.96, 271,571.52 and 111,909

Step by Step Solution

1. Step 1: Write the proportion equation
   196,791.96 : 271,571.52 = 111,909 : x
2. Step 2: Convert to fraction form
   196,791.96/271,571.52 = 111,909/x
3. Step 3: Cross multiply
   196,791.96x = 271,571.52 × 111,909
4. Step 4: Simplify right side
   196,791.96x = 30,391,297,231.68
5. Step 5: Solve for x
   x = 30,391,297,231.68/196,791.96
6. Step 6: Final answer
   x = 154,433.63