Finding the Fourth Proportional to 154,684.69, 213,473.27 and 86,723.46

Step by Step Solution

1. Step 1: Write the proportion equation
   154,684.69 : 213,473.27 = 86,723.46 : x
2. Step 2: Convert to fraction form
   154,684.69/213,473.27 = 86,723.46/x
3. Step 3: Cross multiply
   154,684.69x = 213,473.27 × 86,723.46
4. Step 4: Simplify right side
   154,684.69x = 18,513,140,808.72
5. Step 5: Solve for x
   x = 18,513,140,808.72/154,684.69
6. Step 6: Final answer
   x = 119,683.09