Finding the Fourth Proportional to 58,846.71, 81,205.05 and 31,989

Step by Step Solution

1. Step 1: Write the proportion equation
   58,846.71 : 81,205.05 = 31,989 : x
2. Step 2: Convert to fraction form
   58,846.71/81,205.05 = 31,989/x
3. Step 3: Cross multiply
   58,846.71x = 81,205.05 × 31,989
4. Step 4: Simplify right side
   58,846.71x = 2,597,668,344.45
5. Step 5: Solve for x
   x = 2,597,668,344.45/58,846.71
6. Step 6: Final answer
   x = 44,142.97