Finding the Fourth Proportional to 89,371.59, 123,339.41 and 55,386.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89,371.59 : 123,339.41 = 55,386.73 : x
2. Step 2: Convert to fraction form
   89,371.59/123,339.41 = 55,386.73/x
3. Step 3: Cross multiply
   89,371.59x = 123,339.41 × 55,386.73
4. Step 4: Simplify right side
   89,371.59x = 6,831,366,600.03
5. Step 5: Solve for x
   x = 6,831,366,600.03/89,371.59
6. Step 6: Final answer
   x = 76,437.79