Finding the Fourth Proportional to 89,155.76, 123,047.55 and 55,175.18

Step by Step Solution

1. Step 1: Write the proportion equation
   89,155.76 : 123,047.55 = 55,175.18 : x
2. Step 2: Convert to fraction form
   89,155.76/123,047.55 = 55,175.18/x
3. Step 3: Cross multiply
   89,155.76x = 123,047.55 × 55,175.18
4. Step 4: Simplify right side
   89,155.76x = 6,789,170,104.57
5. Step 5: Solve for x
   x = 6,789,170,104.57/89,155.76
6. Step 6: Final answer
   x = 76,149.54