Finding the Fourth Proportional to 89,155.43, 123,047.10 and 55,174.87

Step by Step Solution

1. Step 1: Write the proportion equation
   89,155.43 : 123,047.10 = 55,174.87 : x
2. Step 2: Convert to fraction form
   89,155.43/123,047.10 = 55,174.87/x
3. Step 3: Cross multiply
   89,155.43x = 123,047.10 × 55,174.87
4. Step 4: Simplify right side
   89,155.43x = 6,789,107,746.38
5. Step 5: Solve for x
   x = 6,789,107,746.38/89,155.43
6. Step 6: Final answer
   x = 76,149.12