Finding the Fourth Proportional to 196.83, 271.86 and 155.52

Step by Step Solution

1. Step 1: Write the proportion equation
   196.83 : 271.86 = 155.52 : x
2. Step 2: Convert to fraction form
   196.83/271.86 = 155.52/x
3. Step 3: Cross multiply
   196.83x = 271.86 × 155.52
4. Step 4: Simplify right side
   196.83x = 42,279.08
5. Step 5: Solve for x
   x = 42,279.08/196.83
6. Step 6: Final answer
   x = 214.80