Finding the Fourth Proportional to 196.79, 271.67 and 152.43

Step by Step Solution

1. Step 1: Write the proportion equation
   196.79 : 271.67 = 152.43 : x
2. Step 2: Convert to fraction form
   196.79/271.67 = 152.43/x
3. Step 3: Cross multiply
   196.79x = 271.67 × 152.43
4. Step 4: Simplify right side
   196.79x = 41,411.77
5. Step 5: Solve for x
   x = 41,411.77/196.79
6. Step 6: Final answer
   x = 210.43