Finding the Fourth Proportional to 201,722.56, 278,371.04 and 111,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   201,722.56 : 278,371.04 = 111,078.72 : x
2. Step 2: Convert to fraction form
   201,722.56/278,371.04 = 111,078.72/x
3. Step 3: Cross multiply
   201,722.56x = 278,371.04 × 111,078.72
4. Step 4: Simplify right side
   201,722.56x = 30,921,098,808.27
5. Step 5: Solve for x
   x = 30,921,098,808.27/201,722.56
6. Step 6: Final answer
   x = 153,285.28