Finding the Fourth Proportional to 215,657.82, 297,603.78 and 120,162.48

Step by Step Solution

1. Step 1: Write the proportion equation
   215,657.82 : 297,603.78 = 120,162.48 : x
2. Step 2: Convert to fraction form
   215,657.82/297,603.78 = 120,162.48/x
3. Step 3: Cross multiply
   215,657.82x = 297,603.78 × 120,162.48
4. Step 4: Simplify right side
   215,657.82x = 35,760,808,262.17
5. Step 5: Solve for x
   x = 35,760,808,262.17/215,657.82
6. Step 6: Final answer
   x = 165,821.99