Finding the Fourth Proportional to 861,976.37, 1,189,527.34 and 499,610.42

Step by Step Solution

1. Step 1: Write the proportion equation
   861,976.37 : 1,189,527.34 = 499,610.42 : x
2. Step 2: Convert to fraction form
   861,976.37/1,189,527.34 = 499,610.42/x
3. Step 3: Cross multiply
   861,976.37x = 1,189,527.34 × 499,610.42
4. Step 4: Simplify right side
   861,976.37x = 594,300,245,493.19
5. Step 5: Solve for x
   x = 594,300,245,493.19/861,976.37
6. Step 6: Final answer
   x = 689,462.34