Finding the Fourth Proportional to 196.50, 294.60 and 105.18

Step by Step Solution

1. Step 1: Write the proportion equation
   196.50 : 294.60 = 105.18 : x
2. Step 2: Convert to fraction form
   196.50/294.60 = 105.18/x
3. Step 3: Cross multiply
   196.50x = 294.60 × 105.18
4. Step 4: Simplify right side
   196.50x = 30,986.03
5. Step 5: Solve for x
   x = 30,986.03/196.50
6. Step 6: Final answer
   x = 157.69