Finding the Fourth Proportional to 196.91, 271.69 and 109.58

Step by Step Solution

1. Step 1: Write the proportion equation
   196.91 : 271.69 = 109.58 : x
2. Step 2: Convert to fraction form
   196.91/271.69 = 109.58/x
3. Step 3: Cross multiply
   196.91x = 271.69 × 109.58
4. Step 4: Simplify right side
   196.91x = 29,770.16
5. Step 5: Solve for x
   x = 29,770.16/196.91
6. Step 6: Final answer
   x = 151.19