Finding the Fourth Proportional to 55,131.09, 76,078.59 and 31,259.37

Step by Step Solution

1. Step 1: Write the proportion equation
   55,131.09 : 76,078.59 = 31,259.37 : x
2. Step 2: Convert to fraction form
   55,131.09/76,078.59 = 31,259.37/x
3. Step 3: Cross multiply
   55,131.09x = 76,078.59 × 31,259.37
4. Step 4: Simplify right side
   55,131.09x = 2,378,168,793.89
5. Step 5: Solve for x
   x = 2,378,168,793.89/55,131.09
6. Step 6: Final answer
   x = 43,136.62