Finding the Fourth Proportional to 42,444.47, 63,675.92 and 12,864.59

Step by Step Solution

1. Step 1: Write the proportion equation
   42,444.47 : 63,675.92 = 12,864.59 : x
2. Step 2: Convert to fraction form
   42,444.47/63,675.92 = 12,864.59/x
3. Step 3: Cross multiply
   42,444.47x = 63,675.92 × 12,864.59
4. Step 4: Simplify right side
   42,444.47x = 819,164,556.24
5. Step 5: Solve for x
   x = 819,164,556.24/42,444.47
6. Step 6: Final answer
   x = 19,299.68