Finding the Fourth Proportional to 42,947.20, 64,448.53 and 16,651.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,947.20 : 64,448.53 = 16,651.94 : x
2. Step 2: Convert to fraction form
   42,947.20/64,448.53 = 16,651.94/x
3. Step 3: Cross multiply
   42,947.20x = 64,448.53 × 16,651.94
4. Step 4: Simplify right side
   42,947.20x = 1,073,192,872.04
5. Step 5: Solve for x
   x = 1,073,192,872.04/42,947.20
6. Step 6: Final answer
   x = 24,988.66