Finding the Fourth Proportional to 149,086.58, 205,740.81 and 81,105.03

Step by Step Solution

1. Step 1: Write the proportion equation
   149,086.58 : 205,740.81 = 81,105.03 : x
2. Step 2: Convert to fraction form
   149,086.58/205,740.81 = 81,105.03/x
3. Step 3: Cross multiply
   149,086.58x = 205,740.81 × 81,105.03
4. Step 4: Simplify right side
   149,086.58x = 16,686,614,567.27
5. Step 5: Solve for x
   x = 16,686,614,567.27/149,086.58
6. Step 6: Final answer
   x = 111,925.67