Finding the Fourth Proportional to 81,023.91, 111,807.33 and 45,211.79

Step by Step Solution

1. Step 1: Write the proportion equation
   81,023.91 : 111,807.33 = 45,211.79 : x
2. Step 2: Convert to fraction form
   81,023.91/111,807.33 = 45,211.79/x
3. Step 3: Cross multiply
   81,023.91x = 111,807.33 × 45,211.79
4. Step 4: Simplify right side
   81,023.91x = 5,055,008,965.38
5. Step 5: Solve for x
   x = 5,055,008,965.38/81,023.91
6. Step 6: Final answer
   x = 62,389.10