Finding the Fourth Proportional to 86,275.76, 129,426.69 and 27,105.86

Step by Step Solution

1. Step 1: Write the proportion equation
   86,275.76 : 129,426.69 = 27,105.86 : x
2. Step 2: Convert to fraction form
   86,275.76/129,426.69 = 27,105.86/x
3. Step 3: Cross multiply
   86,275.76x = 129,426.69 × 27,105.86
4. Step 4: Simplify right side
   86,275.76x = 3,508,221,092.27
5. Step 5: Solve for x
   x = 3,508,221,092.27/86,275.76
6. Step 6: Final answer
   x = 40,662.88