Finding the Fourth Proportional to 139,744.86, 209,629.17 and 123,298.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,744.86 : 209,629.17 = 123,298.62 : x
2. Step 2: Convert to fraction form
   139,744.86/209,629.17 = 123,298.62/x
3. Step 3: Cross multiply
   139,744.86x = 209,629.17 × 123,298.62
4. Step 4: Simplify right side
   139,744.86x = 25,846,987,372.75
5. Step 5: Solve for x
   x = 25,846,987,372.75/139,744.86
6. Step 6: Final answer
   x = 184,958.41