Finding the Fourth Proportional to 89,408.50, 123,379.32 and 53,591.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,408.50 : 123,379.32 = 53,591.56 : x
2. Step 2: Convert to fraction form
   89,408.50/123,379.32 = 53,591.56/x
3. Step 3: Cross multiply
   89,408.50x = 123,379.32 × 53,591.56
4. Step 4: Simplify right side
   89,408.50x = 6,612,090,230.54
5. Step 5: Solve for x
   x = 6,612,090,230.54/89,408.50
6. Step 6: Final answer
   x = 73,953.71