Finding the Fourth Proportional to 78.27, 108.04 and 53.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78.27 : 108.04 = 53.83 : x
2. Step 2: Convert to fraction form
   78.27/108.04 = 53.83/x
3. Step 3: Cross multiply
   78.27x = 108.04 × 53.83
4. Step 4: Simplify right side
   78.27x = 5,815.79
5. Step 5: Solve for x
   x = 5,815.79/78.27
6. Step 6: Final answer
   x = 74.30