Finding the Fourth Proportional to 78.95, 108.98 and 52.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78.95 : 108.98 = 52.77 : x
2. Step 2: Convert to fraction form
   78.95/108.98 = 52.77/x
3. Step 3: Cross multiply
   78.95x = 108.98 × 52.77
4. Step 4: Simplify right side
   78.95x = 5,751.01
5. Step 5: Solve for x
   x = 5,751.01/78.95
6. Step 6: Final answer
   x = 72.84