Finding the Fourth Proportional to 51.69, 71.37 and 42.51

Step by Step Solution

1. Step 1: Write the proportion equation
   51.69 : 71.37 = 42.51 : x
2. Step 2: Convert to fraction form
   51.69/71.37 = 42.51/x
3. Step 3: Cross multiply
   51.69x = 71.37 × 42.51
4. Step 4: Simplify right side
   51.69x = 3,033.37
5. Step 5: Solve for x
   x = 3,033.37/51.69
6. Step 6: Final answer
   x = 58.68