Finding the Fourth Proportional to 201,803.52, 278,490.78 and 111,159.89

Step by Step Solution

1. Step 1: Write the proportion equation
   201,803.52 : 278,490.78 = 111,159.89 : x
2. Step 2: Convert to fraction form
   201,803.52/278,490.78 = 111,159.89/x
3. Step 3: Cross multiply
   201,803.52x = 278,490.78 × 111,159.89
4. Step 4: Simplify right side
   201,803.52x = 30,957,003,078.36
5. Step 5: Solve for x
   x = 30,957,003,078.36/201,803.52
6. Step 6: Final answer
   x = 153,401.70