Finding the Fourth Proportional to 42,665.24, 58,851.42 and 30,709.64

Step by Step Solution

1. Step 1: Write the proportion equation
   42,665.24 : 58,851.42 = 30,709.64 : x
2. Step 2: Convert to fraction form
   42,665.24/58,851.42 = 30,709.64/x
3. Step 3: Cross multiply
   42,665.24x = 58,851.42 × 30,709.64
4. Step 4: Simplify right side
   42,665.24x = 1,807,305,921.69
5. Step 5: Solve for x
   x = 1,807,305,921.69/42,665.24
6. Step 6: Final answer
   x = 42,360.15