Finding the Fourth Proportional to 55,329.09, 82,993.59 and 20,271.48

Step by Step Solution

1. Step 1: Write the proportion equation
   55,329.09 : 82,993.59 = 20,271.48 : x
2. Step 2: Convert to fraction form
   55,329.09/82,993.59 = 20,271.48/x
3. Step 3: Cross multiply
   55,329.09x = 82,993.59 × 20,271.48
4. Step 4: Simplify right side
   55,329.09x = 1,682,402,899.81
5. Step 5: Solve for x
   x = 1,682,402,899.81/55,329.09
6. Step 6: Final answer
   x = 30,407.20