Finding the Fourth Proportional to 42,983.59, 64,399.10 and 17,968.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,983.59 : 64,399.10 = 17,968.49 : x
2. Step 2: Convert to fraction form
   42,983.59/64,399.10 = 17,968.49/x
3. Step 3: Cross multiply
   42,983.59x = 64,399.10 × 17,968.49
4. Step 4: Simplify right side
   42,983.59x = 1,157,154,584.36
5. Step 5: Solve for x
   x = 1,157,154,584.36/42,983.59
6. Step 6: Final answer
   x = 26,920.85