Finding the Fourth Proportional to 88,287.81, 121,836.27 and 65,727.69

Step by Step Solution

1. Step 1: Write the proportion equation
   88,287.81 : 121,836.27 = 65,727.69 : x
2. Step 2: Convert to fraction form
   88,287.81/121,836.27 = 65,727.69/x
3. Step 3: Cross multiply
   88,287.81x = 121,836.27 × 65,727.69
4. Step 4: Simplify right side
   88,287.81x = 8,008,016,585.32
5. Step 5: Solve for x
   x = 8,008,016,585.32/88,287.81
6. Step 6: Final answer
   x = 90,703.54