Finding the Fourth Proportional to 42,555.11, 63,842.79 and 21,443.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,555.11 : 63,842.79 = 21,443.27 : x
2. Step 2: Convert to fraction form
   42,555.11/63,842.79 = 21,443.27/x
3. Step 3: Cross multiply
   42,555.11x = 63,842.79 × 21,443.27
4. Step 4: Simplify right side
   42,555.11x = 1,368,998,183.52
5. Step 5: Solve for x
   x = 1,368,998,183.52/42,555.11
6. Step 6: Final answer
   x = 32,170.01