Finding the Fourth Proportional to 105,447.33, 157,915.04 and 57,989.97

Step by Step Solution

1. Step 1: Write the proportion equation
   105,447.33 : 157,915.04 = 57,989.97 : x
2. Step 2: Convert to fraction form
   105,447.33/157,915.04 = 57,989.97/x
3. Step 3: Cross multiply
   105,447.33x = 157,915.04 × 57,989.97
4. Step 4: Simplify right side
   105,447.33x = 9,157,488,142.20
5. Step 5: Solve for x
   x = 9,157,488,142.20/105,447.33
6. Step 6: Final answer
   x = 86,844.19