Finding the Fourth Proportional to 144,216.78, 199,061.18 and 83,814.54

Step by Step Solution

1. Step 1: Write the proportion equation
   144,216.78 : 199,061.18 = 83,814.54 : x
2. Step 2: Convert to fraction form
   144,216.78/199,061.18 = 83,814.54/x
3. Step 3: Cross multiply
   144,216.78x = 199,061.18 × 83,814.54
4. Step 4: Simplify right side
   144,216.78x = 16,684,221,233.56
5. Step 5: Solve for x
   x = 16,684,221,233.56/144,216.78
6. Step 6: Final answer
   x = 115,688.49