Finding the Fourth Proportional to 80,498.16, 111,019.24 and 51,822.80

Step by Step Solution

1. Step 1: Write the proportion equation
   80,498.16 : 111,019.24 = 51,822.80 : x
2. Step 2: Convert to fraction form
   80,498.16/111,019.24 = 51,822.80/x
3. Step 3: Cross multiply
   80,498.16x = 111,019.24 × 51,822.80
4. Step 4: Simplify right side
   80,498.16x = 5,753,327,870.67
5. Step 5: Solve for x
   x = 5,753,327,870.67/80,498.16
6. Step 6: Final answer
   x = 71,471.55