Finding the Fourth Proportional to 82,242.20, 123,363.32 and 19,912.70

Step by Step Solution

1. Step 1: Write the proportion equation
   82,242.20 : 123,363.32 = 19,912.70 : x
2. Step 2: Convert to fraction form
   82,242.20/123,363.32 = 19,912.70/x
3. Step 3: Cross multiply
   82,242.20x = 123,363.32 × 19,912.70
4. Step 4: Simplify right side
   82,242.20x = 2,456,496,991.01
5. Step 5: Solve for x
   x = 2,456,496,991.01/82,242.20
6. Step 6: Final answer
   x = 29,869.06