Finding the Fourth Proportional to 149,085.82, 205,739.34 and 81,103.42

Step by Step Solution

1. Step 1: Write the proportion equation
   149,085.82 : 205,739.34 = 81,103.42 : x
2. Step 2: Convert to fraction form
   149,085.82/205,739.34 = 81,103.42/x
3. Step 3: Cross multiply
   149,085.82x = 205,739.34 × 81,103.42
4. Step 4: Simplify right side
   149,085.82x = 16,686,164,102.54
5. Step 5: Solve for x
   x = 16,686,164,102.54/149,085.82
6. Step 6: Final answer
   x = 111,923.21