Finding the Fourth Proportional to 42,983.91, 64,463.40 and 18,023.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,983.91 : 64,463.40 = 18,023.31 : x
2. Step 2: Convert to fraction form
   42,983.91/64,463.40 = 18,023.31/x
3. Step 3: Cross multiply
   42,983.91x = 64,463.40 × 18,023.31
4. Step 4: Simplify right side
   42,983.91x = 1,161,843,841.85
5. Step 5: Solve for x
   x = 1,161,843,841.85/42,983.91
6. Step 6: Final answer
   x = 27,029.74