Finding the Fourth Proportional to 42,786.82, 64,153.50 and 16,460.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,786.82 : 64,153.50 = 16,460.20 : x
2. Step 2: Convert to fraction form
   42,786.82/64,153.50 = 16,460.20/x
3. Step 3: Cross multiply
   42,786.82x = 64,153.50 × 16,460.20
4. Step 4: Simplify right side
   42,786.82x = 1,055,979,440.70
5. Step 5: Solve for x
   x = 1,055,979,440.70/42,786.82
6. Step 6: Final answer
   x = 24,680.02