Finding the Fourth Proportional to 196.88, 271.69 and 109.55

Step by Step Solution

1. Step 1: Write the proportion equation
   196.88 : 271.69 = 109.55 : x
2. Step 2: Convert to fraction form
   196.88/271.69 = 109.55/x
3. Step 3: Cross multiply
   196.88x = 271.69 × 109.55
4. Step 4: Simplify right side
   196.88x = 29,764.04
5. Step 5: Solve for x
   x = 29,764.04/196.88
6. Step 6: Final answer
   x = 151.18