Finding the Fourth Proportional to 215,120.72, 296,842.52 and 119,621.72

Step by Step Solution

1. Step 1: Write the proportion equation
   215,120.72 : 296,842.52 = 119,621.72 : x
2. Step 2: Convert to fraction form
   215,120.72/296,842.52 = 119,621.72/x
3. Step 3: Cross multiply
   215,120.72x = 296,842.52 × 119,621.72
4. Step 4: Simplify right side
   215,120.72x = 35,508,812,811.53
5. Step 5: Solve for x
   x = 35,508,812,811.53/215,120.72
6. Step 6: Final answer
   x = 165,064.59