Finding the Fourth Proportional to 89,445.22, 123,431.90 and 49,158.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,445.22 : 123,431.90 = 49,158.96 : x
2. Step 2: Convert to fraction form
   89,445.22/123,431.90 = 49,158.96/x
3. Step 3: Cross multiply
   89,445.22x = 123,431.90 × 49,158.96
4. Step 4: Simplify right side
   89,445.22x = 6,067,783,834.82
5. Step 5: Solve for x
   x = 6,067,783,834.82/89,445.22
6. Step 6: Final answer
   x = 67,837.99