Finding the Fourth Proportional to 300,677.87, 451,016.49 and 123,185.20

Step by Step Solution

1. Step 1: Write the proportion equation
   300,677.87 : 451,016.49 = 123,185.20 : x
2. Step 2: Convert to fraction form
   300,677.87/451,016.49 = 123,185.20/x
3. Step 3: Cross multiply
   300,677.87x = 451,016.49 × 123,185.20
4. Step 4: Simplify right side
   300,677.87x = 55,558,556,523.95
5. Step 5: Solve for x
   x = 55,558,556,523.95/300,677.87
6. Step 6: Final answer
   x = 184,777.67