Finding the Fourth Proportional to 239,061.04, 358,477.24 and 139,249.72

Step by Step Solution

1. Step 1: Write the proportion equation
   239,061.04 : 358,477.24 = 139,249.72 : x
2. Step 2: Convert to fraction form
   239,061.04/358,477.24 = 139,249.72/x
3. Step 3: Cross multiply
   239,061.04x = 358,477.24 × 139,249.72
4. Step 4: Simplify right side
   239,061.04x = 49,917,855,296.37
5. Step 5: Solve for x
   x = 49,917,855,296.37/239,061.04
6. Step 6: Final answer
   x = 208,807.99