Finding the Fourth Proportional to 196.77, 271.91 and 150.10

Step by Step Solution

1. Step 1: Write the proportion equation
   196.77 : 271.91 = 150.10 : x
2. Step 2: Convert to fraction form
   196.77/271.91 = 150.10/x
3. Step 3: Cross multiply
   196.77x = 271.91 × 150.10
4. Step 4: Simplify right side
   196.77x = 40,813.69
5. Step 5: Solve for x
   x = 40,813.69/196.77
6. Step 6: Final answer
   x = 207.42