Finding the Fourth Proportional to 155.98, 215.34 and 111.94

Step by Step Solution

1. Step 1: Write the proportion equation
   155.98 : 215.34 = 111.94 : x
2. Step 2: Convert to fraction form
   155.98/215.34 = 111.94/x
3. Step 3: Cross multiply
   155.98x = 215.34 × 111.94
4. Step 4: Simplify right side
   155.98x = 24,105.16
5. Step 5: Solve for x
   x = 24,105.16/155.98
6. Step 6: Final answer
   x = 154.54