Finding the Fourth Proportional to 42,010.38, 57,935.34 and 30,661.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,010.38 : 57,935.34 = 30,661.90 : x
2. Step 2: Convert to fraction form
   42,010.38/57,935.34 = 30,661.90/x
3. Step 3: Cross multiply
   42,010.38x = 57,935.34 × 30,661.90
4. Step 4: Simplify right side
   42,010.38x = 1,776,407,456.71
5. Step 5: Solve for x
   x = 1,776,407,456.71/42,010.38
6. Step 6: Final answer
   x = 42,284.97