Finding the Fourth Proportional to 215,987.43, 298,062.77 and 120,494.12

Step by Step Solution

1. Step 1: Write the proportion equation
   215,987.43 : 298,062.77 = 120,494.12 : x
2. Step 2: Convert to fraction form
   215,987.43/298,062.77 = 120,494.12/x
3. Step 3: Cross multiply
   215,987.43x = 298,062.77 × 120,494.12
4. Step 4: Simplify right side
   215,987.43x = 35,914,811,477.15
5. Step 5: Solve for x
   x = 35,914,811,477.15/215,987.43
6. Step 6: Final answer
   x = 166,281.96