Finding the Fourth Proportional to 152.91, 211.10 and 111.42

Step by Step Solution

1. Step 1: Write the proportion equation
   152.91 : 211.10 = 111.42 : x
2. Step 2: Convert to fraction form
   152.91/211.10 = 111.42/x
3. Step 3: Cross multiply
   152.91x = 211.10 × 111.42
4. Step 4: Simplify right side
   152.91x = 23,520.76
5. Step 5: Solve for x
   x = 23,520.76/152.91
6. Step 6: Final answer
   x = 153.82