Finding the Fourth Proportional to 140,290.52, 193,641.18 and 89,304.80

Step by Step Solution

1. Step 1: Write the proportion equation
   140,290.52 : 193,641.18 = 89,304.80 : x
2. Step 2: Convert to fraction form
   140,290.52/193,641.18 = 89,304.80/x
3. Step 3: Cross multiply
   140,290.52x = 193,641.18 × 89,304.80
4. Step 4: Simplify right side
   140,290.52x = 17,293,086,851.66
5. Step 5: Solve for x
   x = 17,293,086,851.66/140,290.52
6. Step 6: Final answer
   x = 123,266.25