Finding the Fourth Proportional to 42,518.71, 63,736.71 and 20,326.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42,518.71 : 63,736.71 = 20,326.33 : x
2. Step 2: Convert to fraction form
   42,518.71/63,736.71 = 20,326.33/x
3. Step 3: Cross multiply
   42,518.71x = 63,736.71 × 20,326.33
4. Step 4: Simplify right side
   42,518.71x = 1,295,533,400.57
5. Step 5: Solve for x
   x = 1,295,533,400.57/42,518.71
6. Step 6: Final answer
   x = 30,469.72