Finding the Fourth Proportional to 55,300.10, 76,310.85 and 31,423.46

Step by Step Solution

1. Step 1: Write the proportion equation
   55,300.10 : 76,310.85 = 31,423.46 : x
2. Step 2: Convert to fraction form
   55,300.10/76,310.85 = 31,423.46/x
3. Step 3: Cross multiply
   55,300.10x = 76,310.85 × 31,423.46
4. Step 4: Simplify right side
   55,300.10x = 2,397,950,942.54
5. Step 5: Solve for x
   x = 2,397,950,942.54/55,300.10
6. Step 6: Final answer
   x = 43,362.51