Finding the Fourth Proportional to 404,386.50, 606,665.88 and 120,077.88

Step by Step Solution

1. Step 1: Write the proportion equation
   404,386.50 : 606,665.88 = 120,077.88 : x
2. Step 2: Convert to fraction form
   404,386.50/606,665.88 = 120,077.88/x
3. Step 3: Cross multiply
   404,386.50x = 606,665.88 × 120,077.88
4. Step 4: Simplify right side
   404,386.50x = 72,847,152,738.73
5. Step 5: Solve for x
   x = 72,847,152,738.73/404,386.50
6. Step 6: Final answer
   x = 180,142.40