Finding the Fourth Proportional to 89,994.36, 123,112.92 and 89,615.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,994.36 : 123,112.92 = 89,615.28 : x
2. Step 2: Convert to fraction form
   89,994.36/123,112.92 = 89,615.28/x
3. Step 3: Cross multiply
   89,994.36x = 123,112.92 × 89,615.28
4. Step 4: Simplify right side
   89,994.36x = 11,032,798,797.42
5. Step 5: Solve for x
   x = 11,032,798,797.42/89,994.36
6. Step 6: Final answer
   x = 122,594.34