Finding the Fourth Proportional to 31,270.76, 43,152.90 and 17,124.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,270.76 : 43,152.90 = 17,124.20 : x
2. Step 2: Convert to fraction form
   31,270.76/43,152.90 = 17,124.20/x
3. Step 3: Cross multiply
   31,270.76x = 43,152.90 × 17,124.20
4. Step 4: Simplify right side
   31,270.76x = 738,958,890.18
5. Step 5: Solve for x
   x = 738,958,890.18/31,270.76
6. Step 6: Final answer
   x = 23,630.99