Finding the Fourth Proportional to 86,976.81, 120,269.61 and 69,040.71

Step by Step Solution

1. Step 1: Write the proportion equation
   86,976.81 : 120,269.61 = 69,040.71 : x
2. Step 2: Convert to fraction form
   86,976.81/120,269.61 = 69,040.71/x
3. Step 3: Cross multiply
   86,976.81x = 120,269.61 × 69,040.71
4. Step 4: Simplify right side
   86,976.81x = 8,303,499,265.82
5. Step 5: Solve for x
   x = 8,303,499,265.82/86,976.81
6. Step 6: Final answer
   x = 95,467.97