Finding the Fourth Proportional to 31,713, 43,647.42 and 27,185.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,713 : 43,647.42 = 27,185.91 : x
2. Step 2: Convert to fraction form
   31,713/43,647.42 = 27,185.91/x
3. Step 3: Cross multiply
   31,713x = 43,647.42 × 27,185.91
4. Step 4: Simplify right side
   31,713x = 1,186,594,831.85
5. Step 5: Solve for x
   x = 1,186,594,831.85/31,713
6. Step 6: Final answer
   x = 37,416.67