Finding the Fourth Proportional to 89,169.16, 123,069.05 and 67,729.87

Step by Step Solution

1. Step 1: Write the proportion equation
   89,169.16 : 123,069.05 = 67,729.87 : x
2. Step 2: Convert to fraction form
   89,169.16/123,069.05 = 67,729.87/x
3. Step 3: Cross multiply
   89,169.16x = 123,069.05 × 67,729.87
4. Step 4: Simplify right side
   89,169.16x = 8,335,450,981.83
5. Step 5: Solve for x
   x = 8,335,450,981.83/89,169.16
6. Step 6: Final answer
   x = 93,479.08