Finding the Fourth Proportional to 144,769.68, 199,790.37 and 81,127.98

Step by Step Solution

1. Step 1: Write the proportion equation
   144,769.68 : 199,790.37 = 81,127.98 : x
2. Step 2: Convert to fraction form
   144,769.68/199,790.37 = 81,127.98/x
3. Step 3: Cross multiply
   144,769.68x = 199,790.37 × 81,127.98
4. Step 4: Simplify right side
   144,769.68x = 16,208,589,141.55
5. Step 5: Solve for x
   x = 16,208,589,141.55/144,769.68
6. Step 6: Final answer
   x = 111,961.21