Finding the Fourth Proportional to 215,919.24, 297,969.06 and 120,432.10

Step by Step Solution

1. Step 1: Write the proportion equation
   215,919.24 : 297,969.06 = 120,432.10 : x
2. Step 2: Convert to fraction form
   215,919.24/297,969.06 = 120,432.10/x
3. Step 3: Cross multiply
   215,919.24x = 297,969.06 × 120,432.10
4. Step 4: Simplify right side
   215,919.24x = 35,885,039,630.83
5. Step 5: Solve for x
   x = 35,885,039,630.83/215,919.24
6. Step 6: Final answer
   x = 166,196.58