Finding the Fourth Proportional to 80,505, 111,101.76 and 48,681.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80,505 : 111,101.76 = 48,681.72 : x
2. Step 2: Convert to fraction form
   80,505/111,101.76 = 48,681.72/x
3. Step 3: Cross multiply
   80,505x = 111,101.76 × 48,681.72
4. Step 4: Simplify right side
   80,505x = 5,408,624,771.83
5. Step 5: Solve for x
   x = 5,408,624,771.83/80,505
6. Step 6: Final answer
   x = 67,183.71