Finding the Fourth Proportional to 42,003.75, 57,965.18 and 23,142.09

Step by Step Solution

1. Step 1: Write the proportion equation
   42,003.75 : 57,965.18 = 23,142.09 : x
2. Step 2: Convert to fraction form
   42,003.75/57,965.18 = 23,142.09/x
3. Step 3: Cross multiply
   42,003.75x = 57,965.18 × 23,142.09
4. Step 4: Simplify right side
   42,003.75x = 1,341,435,412.43
5. Step 5: Solve for x
   x = 1,341,435,412.43/42,003.75
6. Step 6: Final answer
   x = 31,936.09