Finding the Fourth Proportional to 300,847.68, 451,268.28 and 123,315.12

Step by Step Solution

1. Step 1: Write the proportion equation
   300,847.68 : 451,268.28 = 123,315.12 : x
2. Step 2: Convert to fraction form
   300,847.68/451,268.28 = 123,315.12/x
3. Step 3: Cross multiply
   300,847.68x = 451,268.28 × 123,315.12
4. Step 4: Simplify right side
   300,847.68x = 55,648,202,100.39
5. Step 5: Solve for x
   x = 55,648,202,100.39/300,847.68
6. Step 6: Final answer
   x = 184,971.35