Finding the Fourth Proportional to 144,077.61, 216,268.59 and 80,951.68

Step by Step Solution

1. Step 1: Write the proportion equation
   144,077.61 : 216,268.59 = 80,951.68 : x
2. Step 2: Convert to fraction form
   144,077.61/216,268.59 = 80,951.68/x
3. Step 3: Cross multiply
   144,077.61x = 216,268.59 × 80,951.68
4. Step 4: Simplify right side
   144,077.61x = 17,507,304,205.63
5. Step 5: Solve for x
   x = 17,507,304,205.63/144,077.61
6. Step 6: Final answer
   x = 121,513.02