Finding the Fourth Proportional to 91,874.62, 126,694.83 and 86,878.54

Step by Step Solution

1. Step 1: Write the proportion equation
   91,874.62 : 126,694.83 = 86,878.54 : x
2. Step 2: Convert to fraction form
   91,874.62/126,694.83 = 86,878.54/x
3. Step 3: Cross multiply
   91,874.62x = 126,694.83 × 86,878.54
4. Step 4: Simplify right side
   91,874.62x = 11,007,061,855.95
5. Step 5: Solve for x
   x = 11,007,061,855.95/91,874.62
6. Step 6: Final answer
   x = 119,805.25