Finding the Fourth Proportional to 149,087.82, 205,742.10 and 81,105.42

Step by Step Solution

1. Step 1: Write the proportion equation
   149,087.82 : 205,742.10 = 81,105.42 : x
2. Step 2: Convert to fraction form
   149,087.82/205,742.10 = 81,105.42/x
3. Step 3: Cross multiply
   149,087.82x = 205,742.10 × 81,105.42
4. Step 4: Simplify right side
   149,087.82x = 16,686,799,432.18
5. Step 5: Solve for x
   x = 16,686,799,432.18/149,087.82
6. Step 6: Final answer
   x = 111,925.97