Finding the Fourth Proportional to 139,369.09, 209,054.49 and 34,187.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,369.09 : 209,054.49 = 34,187.98 : x
2. Step 2: Convert to fraction form
   139,369.09/209,054.49 = 34,187.98/x
3. Step 3: Cross multiply
   139,369.09x = 209,054.49 × 34,187.98
4. Step 4: Simplify right side
   139,369.09x = 7,147,150,723.03
5. Step 5: Solve for x
   x = 7,147,150,723.03/139,369.09
6. Step 6: Final answer
   x = 51,282.18