Finding the Fourth Proportional to 82,974.96, 124,462.89 and 20,645.46

Step by Step Solution

1. Step 1: Write the proportion equation
   82,974.96 : 124,462.89 = 20,645.46 : x
2. Step 2: Convert to fraction form
   82,974.96/124,462.89 = 20,645.46/x
3. Step 3: Cross multiply
   82,974.96x = 124,462.89 × 20,645.46
4. Step 4: Simplify right side
   82,974.96x = 2,569,593,616.98
5. Step 5: Solve for x
   x = 2,569,593,616.98/82,974.96
6. Step 6: Final answer
   x = 30,968.30