Finding the Fourth Proportional to 65,986, 91,061.04 and 39,142

Step by Step Solution

1. Step 1: Write the proportion equation
   65,986 : 91,061.04 = 39,142 : x
2. Step 2: Convert to fraction form
   65,986/91,061.04 = 39,142/x
3. Step 3: Cross multiply
   65,986x = 91,061.04 × 39,142
4. Step 4: Simplify right side
   65,986x = 3,564,311,227.68
5. Step 5: Solve for x
   x = 3,564,311,227.68/65,986
6. Step 6: Final answer
   x = 54,016.17