Finding the Fourth Proportional to 55,362.80, 76,404.89 and 31,488.05

Step by Step Solution

1. Step 1: Write the proportion equation
   55,362.80 : 76,404.89 = 31,488.05 : x
2. Step 2: Convert to fraction form
   55,362.80/76,404.89 = 31,488.05/x
3. Step 3: Cross multiply
   55,362.80x = 76,404.89 × 31,488.05
4. Step 4: Simplify right side
   55,362.80x = 2,405,840,996.56
5. Step 5: Solve for x
   x = 2,405,840,996.56/55,362.80
6. Step 6: Final answer
   x = 43,455.91