Finding the Fourth Proportional to 120,406.69, 180,618.69 and 41,519.78

Step by Step Solution

1. Step 1: Write the proportion equation
   120,406.69 : 180,618.69 = 41,519.78 : x
2. Step 2: Convert to fraction form
   120,406.69/180,618.69 = 41,519.78/x
3. Step 3: Cross multiply
   120,406.69x = 180,618.69 × 41,519.78
4. Step 4: Simplify right side
   120,406.69x = 7,499,247,369.59
5. Step 5: Solve for x
   x = 7,499,247,369.59/120,406.69
6. Step 6: Final answer
   x = 62,282.65