Finding the Fourth Proportional to 404,387.10, 606,666.76 and 120,078.47

Step by Step Solution

1. Step 1: Write the proportion equation
   404,387.10 : 606,666.76 = 120,078.47 : x
2. Step 2: Convert to fraction form
   404,387.10/606,666.76 = 120,078.47/x
3. Step 3: Cross multiply
   404,387.10x = 606,666.76 × 120,078.47
4. Step 4: Simplify right side
   404,387.10x = 72,847,614,820.07
5. Step 5: Solve for x
   x = 72,847,614,820.07/404,387.10
6. Step 6: Final answer
   x = 180,143.27