Finding the Fourth Proportional to 144,723.31, 199,715.83 and 81,060.91

Step by Step Solution

1. Step 1: Write the proportion equation
   144,723.31 : 199,715.83 = 81,060.91 : x
2. Step 2: Convert to fraction form
   144,723.31/199,715.83 = 81,060.91/x
3. Step 3: Cross multiply
   144,723.31x = 199,715.83 × 81,060.91
4. Step 4: Simplify right side
   144,723.31x = 16,189,146,921.21
5. Step 5: Solve for x
   x = 16,189,146,921.21/144,723.31
6. Step 6: Final answer
   x = 111,862.75