Finding the Fourth Proportional to 69.18, 103.71 and 51.24

Step by Step Solution

1. Step 1: Write the proportion equation
   69.18 : 103.71 = 51.24 : x
2. Step 2: Convert to fraction form
   69.18/103.71 = 51.24/x
3. Step 3: Cross multiply
   69.18x = 103.71 × 51.24
4. Step 4: Simplify right side
   69.18x = 5,314.10
5. Step 5: Solve for x
   x = 5,314.10/69.18
6. Step 6: Final answer
   x = 76.82