Finding the Fourth Proportional to 78.96, 108.98 and 49.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78.96 : 108.98 = 49.83 : x
2. Step 2: Convert to fraction form
   78.96/108.98 = 49.83/x
3. Step 3: Cross multiply
   78.96x = 108.98 × 49.83
4. Step 4: Simplify right side
   78.96x = 5,430.22
5. Step 5: Solve for x
   x = 5,430.22/78.96
6. Step 6: Final answer
   x = 68.77