Finding the Fourth Proportional to 42,513.30, 63,771 and 20,329.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,513.30 : 63,771 = 20,329.02 : x
2. Step 2: Convert to fraction form
   42,513.30/63,771 = 20,329.02/x
3. Step 3: Cross multiply
   42,513.30x = 63,771 × 20,329.02
4. Step 4: Simplify right side
   42,513.30x = 1,296,401,934.42
5. Step 5: Solve for x
   x = 1,296,401,934.42/42,513.30
6. Step 6: Final answer
   x = 30,494.03