Finding the Fourth Proportional to 89.83, 134.70 and 38.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89.83 : 134.70 = 38.42 : x
2. Step 2: Convert to fraction form
   89.83/134.70 = 38.42/x
3. Step 3: Cross multiply
   89.83x = 134.70 × 38.42
4. Step 4: Simplify right side
   89.83x = 5,175.17
5. Step 5: Solve for x
   x = 5,175.17/89.83
6. Step 6: Final answer
   x = 57.61