Finding the Fourth Proportional to 81,005.72, 111,793.50 and 45,202.73

Step by Step Solution

1. Step 1: Write the proportion equation
   81,005.72 : 111,793.50 = 45,202.73 : x
2. Step 2: Convert to fraction form
   81,005.72/111,793.50 = 45,202.73/x
3. Step 3: Cross multiply
   81,005.72x = 111,793.50 × 45,202.73
4. Step 4: Simplify right side
   81,005.72x = 5,053,370,837.29
5. Step 5: Solve for x
   x = 5,053,370,837.29/81,005.72
6. Step 6: Final answer
   x = 62,382.89