Finding the Fourth Proportional to 196.76, 271.52 and 137.84

Step by Step Solution

1. Step 1: Write the proportion equation
   196.76 : 271.52 = 137.84 : x
2. Step 2: Convert to fraction form
   196.76/271.52 = 137.84/x
3. Step 3: Cross multiply
   196.76x = 271.52 × 137.84
4. Step 4: Simplify right side
   196.76x = 37,426.32
5. Step 5: Solve for x
   x = 37,426.32/196.76
6. Step 6: Final answer
   x = 190.21