Finding the Fourth Proportional to 194.78, 268.82 and 111.89

Step by Step Solution

1. Step 1: Write the proportion equation
   194.78 : 268.82 = 111.89 : x
2. Step 2: Convert to fraction form
   194.78/268.82 = 111.89/x
3. Step 3: Cross multiply
   194.78x = 268.82 × 111.89
4. Step 4: Simplify right side
   194.78x = 30,076.37
5. Step 5: Solve for x
   x = 30,076.37/194.78
6. Step 6: Final answer
   x = 154.42