Finding the Fourth Proportional to 79,376.72, 119,103.92 and 31,989.68

Step by Step Solution

1. Step 1: Write the proportion equation
   79,376.72 : 119,103.92 = 31,989.68 : x
2. Step 2: Convert to fraction form
   79,376.72/119,103.92 = 31,989.68/x
3. Step 3: Cross multiply
   79,376.72x = 119,103.92 × 31,989.68
4. Step 4: Simplify right side
   79,376.72x = 3,810,096,287.55
5. Step 5: Solve for x
   x = 3,810,096,287.55/79,376.72
6. Step 6: Final answer
   x = 48,000.17