Finding the Fourth Proportional to 196.28, 294.42 and 105.02

Step by Step Solution

1. Step 1: Write the proportion equation
   196.28 : 294.42 = 105.02 : x
2. Step 2: Convert to fraction form
   196.28/294.42 = 105.02/x
3. Step 3: Cross multiply
   196.28x = 294.42 × 105.02
4. Step 4: Simplify right side
   196.28x = 30,918.52
5. Step 5: Solve for x
   x = 30,918.52/196.28
6. Step 6: Final answer
   x = 157.53