Finding the Fourth Proportional to 42,014.88, 63,013.32 and 12,432.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,014.88 : 63,013.32 = 12,432.96 : x
2. Step 2: Convert to fraction form
   42,014.88/63,013.32 = 12,432.96/x
3. Step 3: Cross multiply
   42,014.88x = 63,013.32 × 12,432.96
4. Step 4: Simplify right side
   42,014.88x = 783,442,087.03
5. Step 5: Solve for x
   x = 783,442,087.03/42,014.88
6. Step 6: Final answer
   x = 18,646.78