Finding the Fourth Proportional to 89,231.34, 123,074.73 and 75,781.29

Step by Step Solution

1. Step 1: Write the proportion equation
   89,231.34 : 123,074.73 = 75,781.29 : x
2. Step 2: Convert to fraction form
   89,231.34/123,074.73 = 75,781.29/x
3. Step 3: Cross multiply
   89,231.34x = 123,074.73 × 75,781.29
4. Step 4: Simplify right side
   89,231.34x = 9,326,761,805.80
5. Step 5: Solve for x
   x = 9,326,761,805.80/89,231.34
6. Step 6: Final answer
   x = 104,523.39