Finding the Fourth Proportional to 40,743.35, 61,123.69 and 12,662.73

Step by Step Solution

1. Step 1: Write the proportion equation
   40,743.35 : 61,123.69 = 12,662.73 : x
2. Step 2: Convert to fraction form
   40,743.35/61,123.69 = 12,662.73/x
3. Step 3: Cross multiply
   40,743.35x = 61,123.69 × 12,662.73
4. Step 4: Simplify right side
   40,743.35x = 773,992,763.29
5. Step 5: Solve for x
   x = 773,992,763.29/40,743.35
6. Step 6: Final answer
   x = 18,996.79