Finding the Fourth Proportional to 89,458.58, 123,451.80 and 49,171.30

Step by Step Solution

1. Step 1: Write the proportion equation
   89,458.58 : 123,451.80 = 49,171.30 : x
2. Step 2: Convert to fraction form
   89,458.58/123,451.80 = 49,171.30/x
3. Step 3: Cross multiply
   89,458.58x = 123,451.80 × 49,171.30
4. Step 4: Simplify right side
   89,458.58x = 6,070,285,493.34
5. Step 5: Solve for x
   x = 6,070,285,493.34/89,458.58
6. Step 6: Final answer
   x = 67,855.82