Finding the Fourth Proportional to 144,892.69, 199,951.78 and 81,230.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,892.69 : 199,951.78 = 81,230.50 : x
2. Step 2: Convert to fraction form
   144,892.69/199,951.78 = 81,230.50/x
3. Step 3: Cross multiply
   144,892.69x = 199,951.78 × 81,230.50
4. Step 4: Simplify right side
   144,892.69x = 16,242,183,065.29
5. Step 5: Solve for x
   x = 16,242,183,065.29/144,892.69
6. Step 6: Final answer
   x = 112,098.02