Finding the Fourth Proportional to 31,756.52, 43,809.83 and 20,423.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,756.52 : 43,809.83 = 20,423.88 : x
2. Step 2: Convert to fraction form
   31,756.52/43,809.83 = 20,423.88/x
3. Step 3: Cross multiply
   31,756.52x = 43,809.83 × 20,423.88
4. Step 4: Simplify right side
   31,756.52x = 894,766,685.21
5. Step 5: Solve for x
   x = 894,766,685.21/31,756.52
6. Step 6: Final answer
   x = 28,175.84