Finding the Fourth Proportional to 89,630.88, 123,558 and 57,361.92

Step by Step Solution

1. Step 1: Write the proportion equation
   89,630.88 : 123,558 = 57,361.92 : x
2. Step 2: Convert to fraction form
   89,630.88/123,558 = 57,361.92/x
3. Step 3: Cross multiply
   89,630.88x = 123,558 × 57,361.92
4. Step 4: Simplify right side
   89,630.88x = 7,087,524,111.36
5. Step 5: Solve for x
   x = 7,087,524,111.36/89,630.88
6. Step 6: Final answer
   x = 79,074.58