Finding the Fourth Proportional to 201,729.56, 278,380.70 and 111,085.72

Step by Step Solution

1. Step 1: Write the proportion equation
   201,729.56 : 278,380.70 = 111,085.72 : x
2. Step 2: Convert to fraction form
   201,729.56/278,380.70 = 111,085.72/x
3. Step 3: Cross multiply
   201,729.56x = 278,380.70 × 111,085.72
4. Step 4: Simplify right side
   201,729.56x = 30,924,120,493.60
5. Step 5: Solve for x
   x = 30,924,120,493.60/201,729.56
6. Step 6: Final answer
   x = 153,294.94