Finding the Fourth Proportional to 89,456.64, 123,450.18 and 49,173

Step by Step Solution

1. Step 1: Write the proportion equation
   89,456.64 : 123,450.18 = 49,173 : x
2. Step 2: Convert to fraction form
   89,456.64/123,450.18 = 49,173/x
3. Step 3: Cross multiply
   89,456.64x = 123,450.18 × 49,173
4. Step 4: Simplify right side
   89,456.64x = 6,070,415,701.14
5. Step 5: Solve for x
   x = 6,070,415,701.14/89,456.64
6. Step 6: Final answer
   x = 67,858.75