Finding the Fourth Proportional to 42,957.47, 64,455.35 and 16,664.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,957.47 : 64,455.35 = 16,664.27 : x
2. Step 2: Convert to fraction form
   42,957.47/64,455.35 = 16,664.27/x
3. Step 3: Cross multiply
   42,957.47x = 64,455.35 × 16,664.27
4. Step 4: Simplify right side
   42,957.47x = 1,074,100,949.75
5. Step 5: Solve for x
   x = 1,074,100,949.75/42,957.47
6. Step 6: Final answer
   x = 25,003.82