Finding the Fourth Proportional to 55,330.21, 76,355.33 and 31,456.89

Step by Step Solution

1. Step 1: Write the proportion equation
   55,330.21 : 76,355.33 = 31,456.89 : x
2. Step 2: Convert to fraction form
   55,330.21/76,355.33 = 31,456.89/x
3. Step 3: Cross multiply
   55,330.21x = 76,355.33 × 31,456.89
4. Step 4: Simplify right side
   55,330.21x = 2,401,901,216.72
5. Step 5: Solve for x
   x = 2,401,901,216.72/55,330.21
6. Step 6: Final answer
   x = 43,410.30