Finding the Fourth Proportional to 80,967.06, 121,436.82 and 21,789.54

Step by Step Solution

1. Step 1: Write the proportion equation
   80,967.06 : 121,436.82 = 21,789.54 : x
2. Step 2: Convert to fraction form
   80,967.06/121,436.82 = 21,789.54/x
3. Step 3: Cross multiply
   80,967.06x = 121,436.82 × 21,789.54
4. Step 4: Simplify right side
   80,967.06x = 2,646,052,446.86
5. Step 5: Solve for x
   x = 2,646,052,446.86/80,967.06
6. Step 6: Final answer
   x = 32,680.60