Finding the Fourth Proportional to 342,839.91, 514,591.56 and 165,471.78

Step by Step Solution

1. Step 1: Write the proportion equation
   342,839.91 : 514,591.56 = 165,471.78 : x
2. Step 2: Convert to fraction form
   342,839.91/514,591.56 = 165,471.78/x
3. Step 3: Cross multiply
   342,839.91x = 514,591.56 × 165,471.78
4. Step 4: Simplify right side
   342,839.91x = 85,150,381,406.18
5. Step 5: Solve for x
   x = 85,150,381,406.18/342,839.91
6. Step 6: Final answer
   x = 248,367.76