Finding the Fourth Proportional to 201,111.81, 277,578.52 and 139,109.53

Step by Step Solution

1. Step 1: Write the proportion equation
   201,111.81 : 277,578.52 = 139,109.53 : x
2. Step 2: Convert to fraction form
   201,111.81/277,578.52 = 139,109.53/x
3. Step 3: Cross multiply
   201,111.81x = 277,578.52 × 139,109.53
4. Step 4: Simplify right side
   201,111.81x = 38,613,816,544.59
5. Step 5: Solve for x
   x = 38,613,816,544.59/201,111.81
6. Step 6: Final answer
   x = 192,001.73