Finding the Fourth Proportional to 137,579.54, 189,789.86 and 89,860.82

Step by Step Solution

1. Step 1: Write the proportion equation
   137,579.54 : 189,789.86 = 89,860.82 : x
2. Step 2: Convert to fraction form
   137,579.54/189,789.86 = 89,860.82/x
3. Step 3: Cross multiply
   137,579.54x = 189,789.86 × 89,860.82
4. Step 4: Simplify right side
   137,579.54x = 17,054,672,447.29
5. Step 5: Solve for x
   x = 17,054,672,447.29/137,579.54
6. Step 6: Final answer
   x = 123,962.27