Finding the Fourth Proportional to 42,010.88, 57,936.03 and 30,662.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,010.88 : 57,936.03 = 30,662.40 : x
2. Step 2: Convert to fraction form
   42,010.88/57,936.03 = 30,662.40/x
3. Step 3: Cross multiply
   42,010.88x = 57,936.03 × 30,662.40
4. Step 4: Simplify right side
   42,010.88x = 1,776,457,726.27
5. Step 5: Solve for x
   x = 1,776,457,726.27/42,010.88
6. Step 6: Final answer
   x = 42,285.66