Finding the Fourth Proportional to 86,067.98, 118,787.91 and 71,705.03

Step by Step Solution

1. Step 1: Write the proportion equation
   86,067.98 : 118,787.91 = 71,705.03 : x
2. Step 2: Convert to fraction form
   86,067.98/118,787.91 = 71,705.03/x
3. Step 3: Cross multiply
   86,067.98x = 118,787.91 × 71,705.03
4. Step 4: Simplify right side
   86,067.98x = 8,517,690,557.89
5. Step 5: Solve for x
   x = 8,517,690,557.89/86,067.98
6. Step 6: Final answer
   x = 98,964.69