Finding the Fourth Proportional to 319,019.69, 478,750.54 and 126,874.42

Step by Step Solution

1. Step 1: Write the proportion equation
   319,019.69 : 478,750.54 = 126,874.42 : x
2. Step 2: Convert to fraction form
   319,019.69/478,750.54 = 126,874.42/x
3. Step 3: Cross multiply
   319,019.69x = 478,750.54 × 126,874.42
4. Step 4: Simplify right side
   319,019.69x = 60,741,198,147.15
5. Step 5: Solve for x
   x = 60,741,198,147.15/319,019.69
6. Step 6: Final answer
   x = 190,399.53