Finding the Fourth Proportional to 80,582.89, 120,863.17 and 21,423.37

Step by Step Solution

1. Step 1: Write the proportion equation
   80,582.89 : 120,863.17 = 21,423.37 : x
2. Step 2: Convert to fraction form
   80,582.89/120,863.17 = 21,423.37/x
3. Step 3: Cross multiply
   80,582.89x = 120,863.17 × 21,423.37
4. Step 4: Simplify right side
   80,582.89x = 2,589,296,410.28
5. Step 5: Solve for x
   x = 2,589,296,410.28/80,582.89
6. Step 6: Final answer
   x = 32,132.09