Finding the Fourth Proportional to 82,992.09, 124,488.60 and 20,662.59

Step by Step Solution

1. Step 1: Write the proportion equation
   82,992.09 : 124,488.60 = 20,662.59 : x
2. Step 2: Convert to fraction form
   82,992.09/124,488.60 = 20,662.59/x
3. Step 3: Cross multiply
   82,992.09x = 124,488.60 × 20,662.59
4. Step 4: Simplify right side
   82,992.09x = 2,572,257,290.82
5. Step 5: Solve for x
   x = 2,572,257,290.82/82,992.09
6. Step 6: Final answer
   x = 30,994.00