Finding the Fourth Proportional to 69.58, 104.29 and 42.54

Step by Step Solution

1. Step 1: Write the proportion equation
   69.58 : 104.29 = 42.54 : x
2. Step 2: Convert to fraction form
   69.58/104.29 = 42.54/x
3. Step 3: Cross multiply
   69.58x = 104.29 × 42.54
4. Step 4: Simplify right side
   69.58x = 4,436.59
5. Step 5: Solve for x
   x = 4,436.59/69.58
6. Step 6: Final answer
   x = 63.77