Finding the Fourth Proportional to 261,535.23, 392,265.59 and 84,019.28

Step by Step Solution

1. Step 1: Write the proportion equation
   261,535.23 : 392,265.59 = 84,019.28 : x
2. Step 2: Convert to fraction form
   261,535.23/392,265.59 = 84,019.28/x
3. Step 3: Cross multiply
   261,535.23x = 392,265.59 × 84,019.28
4. Step 4: Simplify right side
   261,535.23x = 32,957,870,059.15
5. Step 5: Solve for x
   x = 32,957,870,059.15/261,535.23
6. Step 6: Final answer
   x = 126,016.94