Finding the Fourth Proportional to 82,902.72, 124,355.34 and 20,573.28

Step by Step Solution

1. Step 1: Write the proportion equation
   82,902.72 : 124,355.34 = 20,573.28 : x
2. Step 2: Convert to fraction form
   82,902.72/124,355.34 = 20,573.28/x
3. Step 3: Cross multiply
   82,902.72x = 124,355.34 × 20,573.28
4. Step 4: Simplify right side
   82,902.72x = 2,558,397,229.32
5. Step 5: Solve for x
   x = 2,558,397,229.32/82,902.72
6. Step 6: Final answer
   x = 30,860.23