Finding the Fourth Proportional to 196.72, 294.92 and 105.49

Step by Step Solution

1. Step 1: Write the proportion equation
   196.72 : 294.92 = 105.49 : x
2. Step 2: Convert to fraction form
   196.72/294.92 = 105.49/x
3. Step 3: Cross multiply
   196.72x = 294.92 × 105.49
4. Step 4: Simplify right side
   196.72x = 31,109.85
5. Step 5: Solve for x
   x = 31,109.85/196.72
6. Step 6: Final answer
   x = 158.14