Finding the Fourth Proportional to 42,145.38, 63,218.04 and 12,562.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.38 : 63,218.04 = 12,562.46 : x
2. Step 2: Convert to fraction form
   42,145.38/63,218.04 = 12,562.46/x
3. Step 3: Cross multiply
   42,145.38x = 63,218.04 × 12,562.46
4. Step 4: Simplify right side
   42,145.38x = 794,173,782.69
5. Step 5: Solve for x
   x = 794,173,782.69/42,145.38
6. Step 6: Final answer
   x = 18,843.67