Finding the Fourth Proportional to 69.96, 104.82 and 42.82

Step by Step Solution

1. Step 1: Write the proportion equation
   69.96 : 104.82 = 42.82 : x
2. Step 2: Convert to fraction form
   69.96/104.82 = 42.82/x
3. Step 3: Cross multiply
   69.96x = 104.82 × 42.82
4. Step 4: Simplify right side
   69.96x = 4,488.39
5. Step 5: Solve for x
   x = 4,488.39/69.96
6. Step 6: Final answer
   x = 64.16