Finding the Fourth Proportional to 215,142.57, 296,585.51 and 142,423.61

Step by Step Solution

1. Step 1: Write the proportion equation
   215,142.57 : 296,585.51 = 142,423.61 : x
2. Step 2: Convert to fraction form
   215,142.57/296,585.51 = 142,423.61/x
3. Step 3: Cross multiply
   215,142.57x = 296,585.51 × 142,423.61
4. Step 4: Simplify right side
   215,142.57x = 42,240,776,812.85
5. Step 5: Solve for x
   x = 42,240,776,812.85/215,142.57
6. Step 6: Final answer
   x = 196,338.53