Finding the Fourth Proportional to 91,276.72, 126,048.06 and 86,306.74

Step by Step Solution

1. Step 1: Write the proportion equation
   91,276.72 : 126,048.06 = 86,306.74 : x
2. Step 2: Convert to fraction form
   91,276.72/126,048.06 = 86,306.74/x
3. Step 3: Cross multiply
   91,276.72x = 126,048.06 × 86,306.74
4. Step 4: Simplify right side
   91,276.72x = 10,878,797,141.92
5. Step 5: Solve for x
   x = 10,878,797,141.92/91,276.72
6. Step 6: Final answer
   x = 119,184.79