Finding the Fourth Proportional to 77.96, 116.72 and 43.59

Step by Step Solution

1. Step 1: Write the proportion equation
   77.96 : 116.72 = 43.59 : x
2. Step 2: Convert to fraction form
   77.96/116.72 = 43.59/x
3. Step 3: Cross multiply
   77.96x = 116.72 × 43.59
4. Step 4: Simplify right side
   77.96x = 5,087.61
5. Step 5: Solve for x
   x = 5,087.61/77.96
6. Step 6: Final answer
   x = 65.26