Finding the Fourth Proportional to 144,689.51, 199,666.89 and 80,156.12

Step by Step Solution

1. Step 1: Write the proportion equation
   144,689.51 : 199,666.89 = 80,156.12 : x
2. Step 2: Convert to fraction form
   144,689.51/199,666.89 = 80,156.12/x
3. Step 3: Cross multiply
   144,689.51x = 199,666.89 × 80,156.12
4. Step 4: Simplify right side
   144,689.51x = 16,004,522,196.53
5. Step 5: Solve for x
   x = 16,004,522,196.53/144,689.51
6. Step 6: Final answer
   x = 110,612.87