Finding the Fourth Proportional to 69.82, 96.34 and 42.18

Step by Step Solution

1. Step 1: Write the proportion equation
   69.82 : 96.34 = 42.18 : x
2. Step 2: Convert to fraction form
   69.82/96.34 = 42.18/x
3. Step 3: Cross multiply
   69.82x = 96.34 × 42.18
4. Step 4: Simplify right side
   69.82x = 4,063.62
5. Step 5: Solve for x
   x = 4,063.62/69.82
6. Step 6: Final answer
   x = 58.20