Finding the Fourth Proportional to 78.33, 108.06 and 55.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78.33 : 108.06 = 55.05 : x
2. Step 2: Convert to fraction form
   78.33/108.06 = 55.05/x
3. Step 3: Cross multiply
   78.33x = 108.06 × 55.05
4. Step 4: Simplify right side
   78.33x = 5,948.70
5. Step 5: Solve for x
   x = 5,948.70/78.33
6. Step 6: Final answer
   x = 75.94