Finding the Fourth Proportional to 71.69, 107.43 and 51.33

Step by Step Solution

1. Step 1: Write the proportion equation
   71.69 : 107.43 = 51.33 : x
2. Step 2: Convert to fraction form
   71.69/107.43 = 51.33/x
3. Step 3: Cross multiply
   71.69x = 107.43 × 51.33
4. Step 4: Simplify right side
   71.69x = 5,514.59
5. Step 5: Solve for x
   x = 5,514.59/71.69
6. Step 6: Final answer
   x = 76.93