Finding the Fourth Proportional to 221,100.76, 305,168.28 and 140,512.56

Step by Step Solution

1. Step 1: Write the proportion equation
   221,100.76 : 305,168.28 = 140,512.56 : x
2. Step 2: Convert to fraction form
   221,100.76/305,168.28 = 140,512.56/x
3. Step 3: Cross multiply
   221,100.76x = 305,168.28 × 140,512.56
4. Step 4: Simplify right side
   221,100.76x = 42,879,976,253.60
5. Step 5: Solve for x
   x = 42,879,976,253.60/221,100.76
6. Step 6: Final answer
   x = 193,938.62