Finding the Fourth Proportional to 137,003.92, 189,066.72 and 80,416.24

Step by Step Solution

1. Step 1: Write the proportion equation
   137,003.92 : 189,066.72 = 80,416.24 : x
2. Step 2: Convert to fraction form
   137,003.92/189,066.72 = 80,416.24/x
3. Step 3: Cross multiply
   137,003.92x = 189,066.72 × 80,416.24
4. Step 4: Simplify right side
   137,003.92x = 15,204,034,731.53
5. Step 5: Solve for x
   x = 15,204,034,731.53/137,003.92
6. Step 6: Final answer
   x = 110,975.18