Finding the Fourth Proportional to 31,429.50, 43,362.99 and 20,824.98

Step by Step Solution

1. Step 1: Write the proportion equation
   31,429.50 : 43,362.99 = 20,824.98 : x
2. Step 2: Convert to fraction form
   31,429.50/43,362.99 = 20,824.98/x
3. Step 3: Cross multiply
   31,429.50x = 43,362.99 × 20,824.98
4. Step 4: Simplify right side
   31,429.50x = 903,033,399.49
5. Step 5: Solve for x
   x = 903,033,399.49/31,429.50
6. Step 6: Final answer
   x = 28,732.03