Finding the Fourth Proportional to 42,269.46, 63,404.73 and 20,085

Step by Step Solution

1. Step 1: Write the proportion equation
   42,269.46 : 63,404.73 = 20,085 : x
2. Step 2: Convert to fraction form
   42,269.46/63,404.73 = 20,085/x
3. Step 3: Cross multiply
   42,269.46x = 63,404.73 × 20,085
4. Step 4: Simplify right side
   42,269.46x = 1,273,484,002.05
5. Step 5: Solve for x
   x = 1,273,484,002.05/42,269.46
6. Step 6: Final answer
   x = 30,127.76