Finding the Fourth Proportional to 188,131.31, 259,603.89 and 111,637.14

Step by Step Solution

1. Step 1: Write the proportion equation
   188,131.31 : 259,603.89 = 111,637.14 : x
2. Step 2: Convert to fraction form
   188,131.31/259,603.89 = 111,637.14/x
3. Step 3: Cross multiply
   188,131.31x = 259,603.89 × 111,637.14
4. Step 4: Simplify right side
   188,131.31x = 28,981,434,420.32
5. Step 5: Solve for x
   x = 28,981,434,420.32/188,131.31
6. Step 6: Final answer
   x = 154,048.97