Finding the Fourth Proportional to 187,156.72, 280,469.69 and 144,839.82

Step by Step Solution

1. Step 1: Write the proportion equation
   187,156.72 : 280,469.69 = 144,839.82 : x
2. Step 2: Convert to fraction form
   187,156.72/280,469.69 = 144,839.82/x
3. Step 3: Cross multiply
   187,156.72x = 280,469.69 × 144,839.82
4. Step 4: Simplify right side
   187,156.72x = 40,623,179,415.06
5. Step 5: Solve for x
   x = 40,623,179,415.06/187,156.72
6. Step 6: Final answer
   x = 217,054.35