Finding the Fourth Proportional to 42,084.71, 63,136.79 and 12,501.89

Step by Step Solution

1. Step 1: Write the proportion equation
   42,084.71 : 63,136.79 = 12,501.89 : x
2. Step 2: Convert to fraction form
   42,084.71/63,136.79 = 12,501.89/x
3. Step 3: Cross multiply
   42,084.71x = 63,136.79 × 12,501.89
4. Step 4: Simplify right side
   42,084.71x = 789,329,141.02
5. Step 5: Solve for x
   x = 789,329,141.02/42,084.71
6. Step 6: Final answer
   x = 18,755.72