Finding the Fourth Proportional to 76.37, 105.42 and 51.82

Step by Step Solution

1. Step 1: Write the proportion equation
   76.37 : 105.42 = 51.82 : x
2. Step 2: Convert to fraction form
   76.37/105.42 = 51.82/x
3. Step 3: Cross multiply
   76.37x = 105.42 × 51.82
4. Step 4: Simplify right side
   76.37x = 5,462.86
5. Step 5: Solve for x
   x = 5,462.86/76.37
6. Step 6: Final answer
   x = 71.53