Finding the Fourth Proportional to 55,105.74, 76,047.53 and 31,231.62

Step by Step Solution

1. Step 1: Write the proportion equation
   55,105.74 : 76,047.53 = 31,231.62 : x
2. Step 2: Convert to fraction form
   55,105.74/76,047.53 = 31,231.62/x
3. Step 3: Cross multiply
   55,105.74x = 76,047.53 × 31,231.62
4. Step 4: Simplify right side
   55,105.74x = 2,375,087,402.74
5. Step 5: Solve for x
   x = 2,375,087,402.74/55,105.74
6. Step 6: Final answer
   x = 43,100.54