Finding the Fourth Proportional to 42,156.18, 63,215.82 and 12,568.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,156.18 : 63,215.82 = 12,568.12 : x
2. Step 2: Convert to fraction form
   42,156.18/63,215.82 = 12,568.12/x
3. Step 3: Cross multiply
   42,156.18x = 63,215.82 × 12,568.12
4. Step 4: Simplify right side
   42,156.18x = 794,504,011.66
5. Step 5: Solve for x
   x = 794,504,011.66/42,156.18
6. Step 6: Final answer
   x = 18,846.68