Finding the Fourth Proportional to 404,456.16, 606,805.41 and 120,156.18

Step by Step Solution

1. Step 1: Write the proportion equation
   404,456.16 : 606,805.41 = 120,156.18 : x
2. Step 2: Convert to fraction form
   404,456.16/606,805.41 = 120,156.18/x
3. Step 3: Cross multiply
   404,456.16x = 606,805.41 × 120,156.18
4. Step 4: Simplify right side
   404,456.16x = 72,911,420,068.93
5. Step 5: Solve for x
   x = 72,911,420,068.93/404,456.16
6. Step 6: Final answer
   x = 180,270.27