Finding the Fourth Proportional to 144,868.02, 199,921.89 and 81,204.18

Step by Step Solution

1. Step 1: Write the proportion equation
   144,868.02 : 199,921.89 = 81,204.18 : x
2. Step 2: Convert to fraction form
   144,868.02/199,921.89 = 81,204.18/x
3. Step 3: Cross multiply
   144,868.02x = 199,921.89 × 81,204.18
4. Step 4: Simplify right side
   144,868.02x = 16,234,493,141.50
5. Step 5: Solve for x
   x = 16,234,493,141.50/144,868.02
6. Step 6: Final answer
   x = 112,064.02