Finding the Fourth Proportional to 80,661.16, 120,997.50 and 21,496.52

Step by Step Solution

1. Step 1: Write the proportion equation
   80,661.16 : 120,997.50 = 21,496.52 : x
2. Step 2: Convert to fraction form
   80,661.16/120,997.50 = 21,496.52/x
3. Step 3: Cross multiply
   80,661.16x = 120,997.50 × 21,496.52
4. Step 4: Simplify right side
   80,661.16x = 2,601,025,178.70
5. Step 5: Solve for x
   x = 2,601,025,178.70/80,661.16
6. Step 6: Final answer
   x = 32,246.32