Finding the Fourth Proportional to 69.89, 96.49 and 42.27

Step by Step Solution

1. Step 1: Write the proportion equation
   69.89 : 96.49 = 42.27 : x
2. Step 2: Convert to fraction form
   69.89/96.49 = 42.27/x
3. Step 3: Cross multiply
   69.89x = 96.49 × 42.27
4. Step 4: Simplify right side
   69.89x = 4,078.53
5. Step 5: Solve for x
   x = 4,078.53/69.89
6. Step 6: Final answer
   x = 58.35