Finding the Fourth Proportional to 40,208.15, 60,292.69 and 12,123

Step by Step Solution

1. Step 1: Write the proportion equation
   40,208.15 : 60,292.69 = 12,123 : x
2. Step 2: Convert to fraction form
   40,208.15/60,292.69 = 12,123/x
3. Step 3: Cross multiply
   40,208.15x = 60,292.69 × 12,123
4. Step 4: Simplify right side
   40,208.15x = 730,928,250.56
5. Step 5: Solve for x
   x = 730,928,250.56/40,208.15
6. Step 6: Final answer
   x = 18,178.61