Finding the Fourth Proportional to 196.63, 271.29 and 113.71

Step by Step Solution

1. Step 1: Write the proportion equation
   196.63 : 271.29 = 113.71 : x
2. Step 2: Convert to fraction form
   196.63/271.29 = 113.71/x
3. Step 3: Cross multiply
   196.63x = 271.29 × 113.71
4. Step 4: Simplify right side
   196.63x = 30,848.32
5. Step 5: Solve for x
   x = 30,848.32/196.63
6. Step 6: Final answer
   x = 156.88