Finding the Fourth Proportional to 196.43, 294.72 and 105.10

Step by Step Solution

1. Step 1: Write the proportion equation
   196.43 : 294.72 = 105.10 : x
2. Step 2: Convert to fraction form
   196.43/294.72 = 105.10/x
3. Step 3: Cross multiply
   196.43x = 294.72 × 105.10
4. Step 4: Simplify right side
   196.43x = 30,975.07
5. Step 5: Solve for x
   x = 30,975.07/196.43
6. Step 6: Final answer
   x = 157.69