Finding the Fourth Proportional to 78.96, 108.94 and 54.37

Step by Step Solution

1. Step 1: Write the proportion equation
   78.96 : 108.94 = 54.37 : x
2. Step 2: Convert to fraction form
   78.96/108.94 = 54.37/x
3. Step 3: Cross multiply
   78.96x = 108.94 × 54.37
4. Step 4: Simplify right side
   78.96x = 5,923.07
5. Step 5: Solve for x
   x = 5,923.07/78.96
6. Step 6: Final answer
   x = 75.01