Finding the Fourth Proportional to 81,081.03, 111,968.82 and 76,663.29

Step by Step Solution

1. Step 1: Write the proportion equation
   81,081.03 : 111,968.82 = 76,663.29 : x
2. Step 2: Convert to fraction form
   81,081.03/111,968.82 = 76,663.29/x
3. Step 3: Cross multiply
   81,081.03x = 111,968.82 × 76,663.29
4. Step 4: Simplify right side
   81,081.03x = 8,583,898,118.62
5. Step 5: Solve for x
   x = 8,583,898,118.62/81,081.03
6. Step 6: Final answer
   x = 105,868.14