Finding the Fourth Proportional to 55,321.92, 82,991.10 and 20,258.82

Step by Step Solution

1. Step 1: Write the proportion equation
   55,321.92 : 82,991.10 = 20,258.82 : x
2. Step 2: Convert to fraction form
   55,321.92/82,991.10 = 20,258.82/x
3. Step 3: Cross multiply
   55,321.92x = 82,991.10 × 20,258.82
4. Step 4: Simplify right side
   55,321.92x = 1,681,301,756.50
5. Step 5: Solve for x
   x = 1,681,301,756.50/55,321.92
6. Step 6: Final answer
   x = 30,391.24