Finding the Fourth Proportional to 81,043.14, 111,839.67 and 45,233.15

Step by Step Solution

1. Step 1: Write the proportion equation
   81,043.14 : 111,839.67 = 45,233.15 : x
2. Step 2: Convert to fraction form
   81,043.14/111,839.67 = 45,233.15/x
3. Step 3: Cross multiply
   81,043.14x = 111,839.67 × 45,233.15
4. Step 4: Simplify right side
   81,043.14x = 5,058,860,009.86
5. Step 5: Solve for x
   x = 5,058,860,009.86/81,043.14
6. Step 6: Final answer
   x = 62,421.82