Finding the Fourth Proportional to 101,647.24, 139,960.06 and 90,297.05

Step by Step Solution

1. Step 1: Write the proportion equation
   101,647.24 : 139,960.06 = 90,297.05 : x
2. Step 2: Convert to fraction form
   101,647.24/139,960.06 = 90,297.05/x
3. Step 3: Cross multiply
   101,647.24x = 139,960.06 × 90,297.05
4. Step 4: Simplify right side
   101,647.24x = 12,637,981,426.09
5. Step 5: Solve for x
   x = 12,637,981,426.09/101,647.24
6. Step 6: Final answer
   x = 124,331.77