Finding the Fourth Proportional to 42,995.86, 64,468.88 and 16,669.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,995.86 : 64,468.88 = 16,669.78 : x
2. Step 2: Convert to fraction form
   42,995.86/64,468.88 = 16,669.78/x
3. Step 3: Cross multiply
   42,995.86x = 64,468.88 × 16,669.78
4. Step 4: Simplify right side
   42,995.86x = 1,074,682,046.45
5. Step 5: Solve for x
   x = 1,074,682,046.45/42,995.86
6. Step 6: Final answer
   x = 24,995.01