Finding the Fourth Proportional to 196.49, 271.20 and 113.59

Step by Step Solution

1. Step 1: Write the proportion equation
   196.49 : 271.20 = 113.59 : x
2. Step 2: Convert to fraction form
   196.49/271.20 = 113.59/x
3. Step 3: Cross multiply
   196.49x = 271.20 × 113.59
4. Step 4: Simplify right side
   196.49x = 30,806.50
5. Step 5: Solve for x
   x = 30,806.50/196.49
6. Step 6: Final answer
   x = 156.78