Finding the Fourth Proportional to 89,171.94, 123,069.86 and 55,191.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,171.94 : 123,069.86 = 55,191.36 : x
2. Step 2: Convert to fraction form
   89,171.94/123,069.86 = 55,191.36/x
3. Step 3: Cross multiply
   89,171.94x = 123,069.86 × 55,191.36
4. Step 4: Simplify right side
   89,171.94x = 6,792,392,948.41
5. Step 5: Solve for x
   x = 6,792,392,948.41/89,171.94
6. Step 6: Final answer
   x = 76,171.86