Finding the Fourth Proportional to 185,424.72, 278,183.72 and 85,655.50

Step by Step Solution

1. Step 1: Write the proportion equation
   185,424.72 : 278,183.72 = 85,655.50 : x
2. Step 2: Convert to fraction form
   185,424.72/278,183.72 = 85,655.50/x
3. Step 3: Cross multiply
   185,424.72x = 278,183.72 × 85,655.50
4. Step 4: Simplify right side
   185,424.72x = 23,827,965,447.72
5. Step 5: Solve for x
   x = 23,827,965,447.72/185,424.72
6. Step 6: Final answer
   x = 128,504.79