Finding the Fourth Proportional to 144,772.31, 217,105.11 and 49,978.28

Step by Step Solution

1. Step 1: Write the proportion equation
   144,772.31 : 217,105.11 = 49,978.28 : x
2. Step 2: Convert to fraction form
   144,772.31/217,105.11 = 49,978.28/x
3. Step 3: Cross multiply
   144,772.31x = 217,105.11 × 49,978.28
4. Step 4: Simplify right side
   144,772.31x = 10,850,540,519.77
5. Step 5: Solve for x
   x = 10,850,540,519.77/144,772.31
6. Step 6: Final answer
   x = 74,949.00