Finding the Fourth Proportional to 82,945.86, 124,418.87 and 20,616.36

Step by Step Solution

1. Step 1: Write the proportion equation
   82,945.86 : 124,418.87 = 20,616.36 : x
2. Step 2: Convert to fraction form
   82,945.86/124,418.87 = 20,616.36/x
3. Step 3: Cross multiply
   82,945.86x = 124,418.87 × 20,616.36
4. Step 4: Simplify right side
   82,945.86x = 2,565,063,722.37
5. Step 5: Solve for x
   x = 2,565,063,722.37/82,945.86
6. Step 6: Final answer
   x = 30,924.56