Finding the Fourth Proportional to 55,707, 76,876.92 and 30,556.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,707 : 76,876.92 = 30,556.50 : x
2. Step 2: Convert to fraction form
   55,707/76,876.92 = 30,556.50/x
3. Step 3: Cross multiply
   55,707x = 76,876.92 × 30,556.50
4. Step 4: Simplify right side
   55,707x = 2,349,089,605.98
5. Step 5: Solve for x
   x = 2,349,089,605.98/55,707
6. Step 6: Final answer
   x = 42,168.66