Finding the Fourth Proportional to 196.10, 270.64 and 112.10

Step by Step Solution

1. Step 1: Write the proportion equation
   196.10 : 270.64 = 112.10 : x
2. Step 2: Convert to fraction form
   196.10/270.64 = 112.10/x
3. Step 3: Cross multiply
   196.10x = 270.64 × 112.10
4. Step 4: Simplify right side
   196.10x = 30,336.83
5. Step 5: Solve for x
   x = 30,336.83/196.10
6. Step 6: Final answer
   x = 154.70