Finding the Fourth Proportional to 86,790.42, 119,792.79 and 49,086.54

Step by Step Solution

1. Step 1: Write the proportion equation
   86,790.42 : 119,792.79 = 49,086.54 : x
2. Step 2: Convert to fraction form
   86,790.42/119,792.79 = 49,086.54/x
3. Step 3: Cross multiply
   86,790.42x = 119,792.79 × 49,086.54
4. Step 4: Simplify right side
   86,790.42x = 5,880,213,578.05
5. Step 5: Solve for x
   x = 5,880,213,578.05/86,790.42
6. Step 6: Final answer
   x = 67,751.87