Finding the Fourth Proportional to 201,771.32, 278,433.50 and 111,109.56

Step by Step Solution

1. Step 1: Write the proportion equation
   201,771.32 : 278,433.50 = 111,109.56 : x
2. Step 2: Convert to fraction form
   201,771.32/278,433.50 = 111,109.56/x
3. Step 3: Cross multiply
   201,771.32x = 278,433.50 × 111,109.56
4. Step 4: Simplify right side
   201,771.32x = 30,936,623,118.71
5. Step 5: Solve for x
   x = 30,936,623,118.71/201,771.32
6. Step 6: Final answer
   x = 153,325.18