Finding the Fourth Proportional to 42,049.52, 63,086.16 and 12,467.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,049.52 : 63,086.16 = 12,467.28 : x
2. Step 2: Convert to fraction form
   42,049.52/63,086.16 = 12,467.28/x
3. Step 3: Cross multiply
   42,049.52x = 63,086.16 × 12,467.28
4. Step 4: Simplify right side
   42,049.52x = 786,512,820.84
5. Step 5: Solve for x
   x = 786,512,820.84/42,049.52
6. Step 6: Final answer
   x = 18,704.44