Finding the Fourth Proportional to 42,976.49, 64,463.30 and 17,675.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,976.49 : 64,463.30 = 17,675.12 : x
2. Step 2: Convert to fraction form
   42,976.49/64,463.30 = 17,675.12/x
3. Step 3: Cross multiply
   42,976.49x = 64,463.30 × 17,675.12
4. Step 4: Simplify right side
   42,976.49x = 1,139,396,635.88
5. Step 5: Solve for x
   x = 1,139,396,635.88/42,976.49
6. Step 6: Final answer
   x = 26,512.09