Finding the Fourth Proportional to 89,423.10, 123,403.68 and 48,587.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,423.10 : 123,403.68 = 48,587.31 : x
2. Step 2: Convert to fraction form
   89,423.10/123,403.68 = 48,587.31/x
3. Step 3: Cross multiply
   89,423.10x = 123,403.68 × 48,587.31
4. Step 4: Simplify right side
   89,423.10x = 5,995,852,855.30
5. Step 5: Solve for x
   x = 5,995,852,855.30/89,423.10
6. Step 6: Final answer
   x = 67,050.38