Finding the Fourth Proportional to 78.80, 108.72 and 46.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78.80 : 108.72 = 46.06 : x
2. Step 2: Convert to fraction form
   78.80/108.72 = 46.06/x
3. Step 3: Cross multiply
   78.80x = 108.72 × 46.06
4. Step 4: Simplify right side
   78.80x = 5,007.37
5. Step 5: Solve for x
   x = 5,007.37/78.80
6. Step 6: Final answer
   x = 63.55