Finding the Fourth Proportional to 148,087.09, 204,364.88 and 81,019.09

Step by Step Solution

1. Step 1: Write the proportion equation
   148,087.09 : 204,364.88 = 81,019.09 : x
2. Step 2: Convert to fraction form
   148,087.09/204,364.88 = 81,019.09/x
3. Step 3: Cross multiply
   148,087.09x = 204,364.88 × 81,019.09
4. Step 4: Simplify right side
   148,087.09x = 16,557,456,605.56
5. Step 5: Solve for x
   x = 16,557,456,605.56/148,087.09
6. Step 6: Final answer
   x = 111,808.91