Finding the Fourth Proportional to 42,019.14, 63,028.53 and 12,437.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,019.14 : 63,028.53 = 12,437.16 : x
2. Step 2: Convert to fraction form
   42,019.14/63,028.53 = 12,437.16/x
3. Step 3: Cross multiply
   42,019.14x = 63,028.53 × 12,437.16
4. Step 4: Simplify right side
   42,019.14x = 783,895,912.17
5. Step 5: Solve for x
   x = 783,895,912.17/42,019.14
6. Step 6: Final answer
   x = 18,655.69