Finding the Fourth Proportional to 81,034.56, 111,763.40 and 49,202.78

Step by Step Solution

1. Step 1: Write the proportion equation
   81,034.56 : 111,763.40 = 49,202.78 : x
2. Step 2: Convert to fraction form
   81,034.56/111,763.40 = 49,202.78/x
3. Step 3: Cross multiply
   81,034.56x = 111,763.40 × 49,202.78
4. Step 4: Simplify right side
   81,034.56x = 5,499,069,177.42
5. Step 5: Solve for x
   x = 5,499,069,177.42/81,034.56
6. Step 6: Final answer
   x = 67,860.79