Finding the Fourth Proportional to 269,061.50, 371,304.87 and 155,949.86

Step by Step Solution

1. Step 1: Write the proportion equation
   269,061.50 : 371,304.87 = 155,949.86 : x
2. Step 2: Convert to fraction form
   269,061.50/371,304.87 = 155,949.86/x
3. Step 3: Cross multiply
   269,061.50x = 371,304.87 × 155,949.86
4. Step 4: Simplify right side
   269,061.50x = 57,904,942,493.82
5. Step 5: Solve for x
   x = 57,904,942,493.82/269,061.50
6. Step 6: Final answer
   x = 215,210.81