Finding the Fourth Proportional to 144,284.86, 199,240.76 and 89,929.79

Step by Step Solution

1. Step 1: Write the proportion equation
   144,284.86 : 199,240.76 = 89,929.79 : x
2. Step 2: Convert to fraction form
   144,284.86/199,240.76 = 89,929.79/x
3. Step 3: Cross multiply
   144,284.86x = 199,240.76 × 89,929.79
4. Step 4: Simplify right side
   144,284.86x = 17,917,680,429.17
5. Step 5: Solve for x
   x = 17,917,680,429.17/144,284.86
6. Step 6: Final answer
   x = 124,182.68