Finding the Fourth Proportional to 196.69, 271.43 and 111.51

Step by Step Solution

1. Step 1: Write the proportion equation
   196.69 : 271.43 = 111.51 : x
2. Step 2: Convert to fraction form
   196.69/271.43 = 111.51/x
3. Step 3: Cross multiply
   196.69x = 271.43 × 111.51
4. Step 4: Simplify right side
   196.69x = 30,266.60
5. Step 5: Solve for x
   x = 30,266.60/196.69
6. Step 6: Final answer
   x = 153.88