Finding the Fourth Proportional to 139,919.68, 209,878.83 and 34,738.65

Step by Step Solution

1. Step 1: Write the proportion equation
   139,919.68 : 209,878.83 = 34,738.65 : x
2. Step 2: Convert to fraction form
   139,919.68/209,878.83 = 34,738.65/x
3. Step 3: Cross multiply
   139,919.68x = 209,878.83 × 34,738.65
4. Step 4: Simplify right side
   139,919.68x = 7,290,907,217.78
5. Step 5: Solve for x
   x = 7,290,907,217.78/139,919.68
6. Step 6: Final answer
   x = 52,107.80