Finding the Fourth Proportional to 89,209.83, 123,045.28 and 57,348.28

Step by Step Solution

1. Step 1: Write the proportion equation
   89,209.83 : 123,045.28 = 57,348.28 : x
2. Step 2: Convert to fraction form
   89,209.83/123,045.28 = 57,348.28/x
3. Step 3: Cross multiply
   89,209.83x = 123,045.28 × 57,348.28
4. Step 4: Simplify right side
   89,209.83x = 7,056,435,170.12
5. Step 5: Solve for x
   x = 7,056,435,170.12/89,209.83
6. Step 6: Final answer
   x = 79,099.30