Finding the Fourth Proportional to 78.08, 116.88 and 49.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78.08 : 116.88 = 49.10 : x
2. Step 2: Convert to fraction form
   78.08/116.88 = 49.10/x
3. Step 3: Cross multiply
   78.08x = 116.88 × 49.10
4. Step 4: Simplify right side
   78.08x = 5,738.22
5. Step 5: Solve for x
   x = 5,738.22/78.08
6. Step 6: Final answer
   x = 73.50