Finding the Fourth Proportional to 109.88, 151.59 and 68.42

Step by Step Solution

1. Step 1: Write the proportion equation
   109.88 : 151.59 = 68.42 : x
2. Step 2: Convert to fraction form
   109.88/151.59 = 68.42/x
3. Step 3: Cross multiply
   109.88x = 151.59 × 68.42
4. Step 4: Simplify right side
   109.88x = 10,371.79
5. Step 5: Solve for x
   x = 10,371.79/109.88
6. Step 6: Final answer
   x = 94.39