Finding the Fourth Proportional to 137,260.50, 189,289.89 and 89,550.42

Step by Step Solution

1. Step 1: Write the proportion equation
   137,260.50 : 189,289.89 = 89,550.42 : x
2. Step 2: Convert to fraction form
   137,260.50/189,289.89 = 89,550.42/x
3. Step 3: Cross multiply
   137,260.50x = 189,289.89 × 89,550.42
4. Step 4: Simplify right side
   137,260.50x = 16,950,989,151.25
5. Step 5: Solve for x
   x = 16,950,989,151.25/137,260.50
6. Step 6: Final answer
   x = 123,495.03