Finding the Fourth Proportional to 42,426.05, 63,328.92 and 39,342.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42,426.05 : 63,328.92 = 39,342.29 : x
2. Step 2: Convert to fraction form
   42,426.05/63,328.92 = 39,342.29/x
3. Step 3: Cross multiply
   42,426.05x = 63,328.92 × 39,342.29
4. Step 4: Simplify right side
   42,426.05x = 2,491,504,419.38
5. Step 5: Solve for x
   x = 2,491,504,419.38/42,426.05
6. Step 6: Final answer
   x = 58,725.82