Finding the Fourth Proportional to 30,443.68, 45,662.56 and 20,645.92

Step by Step Solution

1. Step 1: Write the proportion equation
   30,443.68 : 45,662.56 = 20,645.92 : x
2. Step 2: Convert to fraction form
   30,443.68/45,662.56 = 20,645.92/x
3. Step 3: Cross multiply
   30,443.68x = 45,662.56 × 20,645.92
4. Step 4: Simplify right side
   30,443.68x = 942,745,560.76
5. Step 5: Solve for x
   x = 942,745,560.76/30,443.68
6. Step 6: Final answer
   x = 30,966.87