Finding the Fourth Proportional to 42,084.21, 63,136.04 and 12,501.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,084.21 : 63,136.04 = 12,501.39 : x
2. Step 2: Convert to fraction form
   42,084.21/63,136.04 = 12,501.39/x
3. Step 3: Cross multiply
   42,084.21x = 63,136.04 × 12,501.39
4. Step 4: Simplify right side
   42,084.21x = 789,288,196.59
5. Step 5: Solve for x
   x = 789,288,196.59/42,084.21
6. Step 6: Final answer
   x = 18,754.97