Finding the Fourth Proportional to 144,840.96, 199,840.90 and 86,674.27

Step by Step Solution

1. Step 1: Write the proportion equation
   144,840.96 : 199,840.90 = 86,674.27 : x
2. Step 2: Convert to fraction form
   144,840.96/199,840.90 = 86,674.27/x
3. Step 3: Cross multiply
   144,840.96x = 199,840.90 × 86,674.27
4. Step 4: Simplify right side
   144,840.96x = 17,321,063,690.27
5. Step 5: Solve for x
   x = 17,321,063,690.27/144,840.96
6. Step 6: Final answer
   x = 119,586.78