Finding the Fourth Proportional to 101,291.69, 139,615.83 and 71,833.26

Step by Step Solution

1. Step 1: Write the proportion equation
   101,291.69 : 139,615.83 = 71,833.26 : x
2. Step 2: Convert to fraction form
   101,291.69/139,615.83 = 71,833.26/x
3. Step 3: Cross multiply
   101,291.69x = 139,615.83 × 71,833.26
4. Step 4: Simplify right side
   101,291.69x = 10,029,059,159.26
5. Step 5: Solve for x
   x = 10,029,059,159.26/101,291.69
6. Step 6: Final answer
   x = 99,011.67