Finding the Fourth Proportional to 42,087.11, 63,141.05 and 12,504.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,087.11 : 63,141.05 = 12,504.89 : x
2. Step 2: Convert to fraction form
   42,087.11/63,141.05 = 12,504.89/x
3. Step 3: Cross multiply
   42,087.11x = 63,141.05 × 12,504.89
4. Step 4: Simplify right side
   42,087.11x = 789,572,073.85
5. Step 5: Solve for x
   x = 789,572,073.85/42,087.11
6. Step 6: Final answer
   x = 18,760.43