Finding the Fourth Proportional to 101,092.72, 139,479.96 and 65,284.24

Step by Step Solution

1. Step 1: Write the proportion equation
   101,092.72 : 139,479.96 = 65,284.24 : x
2. Step 2: Convert to fraction form
   101,092.72/139,479.96 = 65,284.24/x
3. Step 3: Cross multiply
   101,092.72x = 139,479.96 × 65,284.24
4. Step 4: Simplify right side
   101,092.72x = 9,105,843,183.83
5. Step 5: Solve for x
   x = 9,105,843,183.83/101,092.72
6. Step 6: Final answer
   x = 90,074.17