Finding the Fourth Proportional to 201,686.24, 278,327.04 and 111,042.56

Step by Step Solution

1. Step 1: Write the proportion equation
   201,686.24 : 278,327.04 = 111,042.56 : x
2. Step 2: Convert to fraction form
   201,686.24/278,327.04 = 111,042.56/x
3. Step 3: Cross multiply
   201,686.24x = 278,327.04 × 111,042.56
4. Step 4: Simplify right side
   201,686.24x = 30,906,147,038.82
5. Step 5: Solve for x
   x = 30,906,147,038.82/201,686.24
6. Step 6: Final answer
   x = 153,238.75