Finding the Fourth Proportional to 137,160.16, 189,363.60 and 89,496.16

Step by Step Solution

1. Step 1: Write the proportion equation
   137,160.16 : 189,363.60 = 89,496.16 : x
2. Step 2: Convert to fraction form
   137,160.16/189,363.60 = 89,496.16/x
3. Step 3: Cross multiply
   137,160.16x = 189,363.60 × 89,496.16
4. Step 4: Simplify right side
   137,160.16x = 16,947,315,043.78
5. Step 5: Solve for x
   x = 16,947,315,043.78/137,160.16
6. Step 6: Final answer
   x = 123,558.58