Finding the Fourth Proportional to 80,440.96, 110,971.20 and 50,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   80,440.96 : 110,971.20 = 50,206.72 : x
2. Step 2: Convert to fraction form
   80,440.96/110,971.20 = 50,206.72/x
3. Step 3: Cross multiply
   80,440.96x = 110,971.20 × 50,206.72
4. Step 4: Simplify right side
   80,440.96x = 5,571,499,966.46
5. Step 5: Solve for x
   x = 5,571,499,966.46/80,440.96
6. Step 6: Final answer
   x = 69,261.98