Finding the Fourth Proportional to 42,025.29, 63,038.13 and 12,443.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,025.29 : 63,038.13 = 12,443.68 : x
2. Step 2: Convert to fraction form
   42,025.29/63,038.13 = 12,443.68/x
3. Step 3: Cross multiply
   42,025.29x = 63,038.13 × 12,443.68
4. Step 4: Simplify right side
   42,025.29x = 784,426,317.52
5. Step 5: Solve for x
   x = 784,426,317.52/42,025.29
6. Step 6: Final answer
   x = 18,665.58