Finding the Fourth Proportional to 31,819.23, 43,900.66 and 18,385.59

Step by Step Solution

1. Step 1: Write the proportion equation
   31,819.23 : 43,900.66 = 18,385.59 : x
2. Step 2: Convert to fraction form
   31,819.23/43,900.66 = 18,385.59/x
3. Step 3: Cross multiply
   31,819.23x = 43,900.66 × 18,385.59
4. Step 4: Simplify right side
   31,819.23x = 807,139,352.69
5. Step 5: Solve for x
   x = 807,139,352.69/31,819.23
6. Step 6: Final answer
   x = 25,366.40