Finding the Fourth Proportional to 76.29, 105.32 and 48.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76.29 : 105.32 = 48.69 : x
2. Step 2: Convert to fraction form
   76.29/105.32 = 48.69/x
3. Step 3: Cross multiply
   76.29x = 105.32 × 48.69
4. Step 4: Simplify right side
   76.29x = 5,127.79
5. Step 5: Solve for x
   x = 5,127.79/76.29
6. Step 6: Final answer
   x = 67.21