Finding the Fourth Proportional to 81,022.71, 111,800.15 and 45,205.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,022.71 : 111,800.15 = 45,205.76 : x
2. Step 2: Convert to fraction form
   81,022.71/111,800.15 = 45,205.76/x
3. Step 3: Cross multiply
   81,022.71x = 111,800.15 × 45,205.76
4. Step 4: Simplify right side
   81,022.71x = 5,054,010,971.86
5. Step 5: Solve for x
   x = 5,054,010,971.86/81,022.71
6. Step 6: Final answer
   x = 62,377.71