Finding the Fourth Proportional to 42,984.94, 64,456.67 and 18,018.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42,984.94 : 64,456.67 = 18,018.29 : x
2. Step 2: Convert to fraction form
   42,984.94/64,456.67 = 18,018.29/x
3. Step 3: Cross multiply
   42,984.94x = 64,456.67 × 18,018.29
4. Step 4: Simplify right side
   42,984.94x = 1,161,398,695.26
5. Step 5: Solve for x
   x = 1,161,398,695.26/42,984.94
6. Step 6: Final answer
   x = 27,018.74