Finding the Fourth Proportional to 39,815.69, 59,681.61 and 20,052.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,815.69 : 59,681.61 = 20,052.72 : x
2. Step 2: Convert to fraction form
   39,815.69/59,681.61 = 20,052.72/x
3. Step 3: Cross multiply
   39,815.69x = 59,681.61 × 20,052.72
4. Step 4: Simplify right side
   39,815.69x = 1,196,778,614.48
5. Step 5: Solve for x
   x = 1,196,778,614.48/39,815.69
6. Step 6: Final answer
   x = 30,057.97