Finding the Fourth Proportional to 76.69, 105.84 and 43.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76.69 : 105.84 = 43.50 : x
2. Step 2: Convert to fraction form
   76.69/105.84 = 43.50/x
3. Step 3: Cross multiply
   76.69x = 105.84 × 43.50
4. Step 4: Simplify right side
   76.69x = 4,603.29
5. Step 5: Solve for x
   x = 4,603.29/76.69
6. Step 6: Final answer
   x = 60.02