Finding the Fourth Proportional to 144,295.25, 216,436.72 and 140,916.33

Step by Step Solution

1. Step 1: Write the proportion equation
   144,295.25 : 216,436.72 = 140,916.33 : x
2. Step 2: Convert to fraction form
   144,295.25/216,436.72 = 140,916.33/x
3. Step 3: Cross multiply
   144,295.25x = 216,436.72 × 140,916.33
4. Step 4: Simplify right side
   144,295.25x = 30,499,468,259.64
5. Step 5: Solve for x
   x = 30,499,468,259.64/144,295.25
6. Step 6: Final answer
   x = 211,368.48