Finding the Fourth Proportional to 144,670.56, 199,643.85 and 81,008.61

Step by Step Solution

1. Step 1: Write the proportion equation
   144,670.56 : 199,643.85 = 81,008.61 : x
2. Step 2: Convert to fraction form
   144,670.56/199,643.85 = 81,008.61/x
3. Step 3: Cross multiply
   144,670.56x = 199,643.85 × 81,008.61
4. Step 4: Simplify right side
   144,670.56x = 16,172,870,783.55
5. Step 5: Solve for x
   x = 16,172,870,783.55/144,670.56
6. Step 6: Final answer
   x = 111,791.03