Finding the Fourth Proportional to 55,665.69, 76,818.69 and 30,172.29

Step by Step Solution

1. Step 1: Write the proportion equation
   55,665.69 : 76,818.69 = 30,172.29 : x
2. Step 2: Convert to fraction form
   55,665.69/76,818.69 = 30,172.29/x
3. Step 3: Cross multiply
   55,665.69x = 76,818.69 × 30,172.29
4. Step 4: Simplify right side
   55,665.69x = 2,317,795,792.10
5. Step 5: Solve for x
   x = 2,317,795,792.10/55,665.69
6. Step 6: Final answer
   x = 41,637.78