Finding the Fourth Proportional to 42,012.27, 57,937.97 and 30,663.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012.27 : 57,937.97 = 30,663.80 : x
2. Step 2: Convert to fraction form
   42,012.27/57,937.97 = 30,663.80/x
3. Step 3: Cross multiply
   42,012.27x = 57,937.97 × 30,663.80
4. Step 4: Simplify right side
   42,012.27x = 1,776,598,324.49
5. Step 5: Solve for x
   x = 1,776,598,324.49/42,012.27
6. Step 6: Final answer
   x = 42,287.61