Finding the Fourth Proportional to 89,451.88, 123,443.63 and 49,165.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,451.88 : 123,443.63 = 49,165.31 : x
2. Step 2: Convert to fraction form
   89,451.88/123,443.63 = 49,165.31/x
3. Step 3: Cross multiply
   89,451.88x = 123,443.63 × 49,165.31
4. Step 4: Simplify right side
   89,451.88x = 6,069,144,583.63
5. Step 5: Solve for x
   x = 6,069,144,583.63/89,451.88
6. Step 6: Final answer
   x = 67,848.15