Finding the Fourth Proportional to 42,965.01, 64,466.61 and 16,671.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,965.01 : 64,466.61 = 16,671.78 : x
2. Step 2: Convert to fraction form
   42,965.01/64,466.61 = 16,671.78/x
3. Step 3: Cross multiply
   42,965.01x = 64,466.61 × 16,671.78
4. Step 4: Simplify right side
   42,965.01x = 1,074,773,139.27
5. Step 5: Solve for x
   x = 1,074,773,139.27/42,965.01
6. Step 6: Final answer
   x = 25,015.08