Finding the Fourth Proportional to 137,016.12, 189,080.82 and 80,416.56

Step by Step Solution

1. Step 1: Write the proportion equation
   137,016.12 : 189,080.82 = 80,416.56 : x
2. Step 2: Convert to fraction form
   137,016.12/189,080.82 = 80,416.56/x
3. Step 3: Cross multiply
   137,016.12x = 189,080.82 × 80,416.56
4. Step 4: Simplify right side
   137,016.12x = 15,205,229,106.38
5. Step 5: Solve for x
   x = 15,205,229,106.38/137,016.12
6. Step 6: Final answer
   x = 110,974.02