Finding the Fourth Proportional to 144,785.73, 199,804.17 and 81,123.98

Step by Step Solution

1. Step 1: Write the proportion equation
   144,785.73 : 199,804.17 = 81,123.98 : x
2. Step 2: Convert to fraction form
   144,785.73/199,804.17 = 81,123.98/x
3. Step 3: Cross multiply
   144,785.73x = 199,804.17 × 81,123.98
4. Step 4: Simplify right side
   144,785.73x = 16,208,909,990.51
5. Step 5: Solve for x
   x = 16,208,909,990.51/144,785.73
6. Step 6: Final answer
   x = 111,951.02