Finding the Fourth Proportional to 55,171, 76,135.98 and 30,020.68

Step by Step Solution

1. Step 1: Write the proportion equation
   55,171 : 76,135.98 = 30,020.68 : x
2. Step 2: Convert to fraction form
   55,171/76,135.98 = 30,020.68/x
3. Step 3: Cross multiply
   55,171x = 76,135.98 × 30,020.68
4. Step 4: Simplify right side
   55,171x = 2,285,653,892.07
5. Step 5: Solve for x
   x = 2,285,653,892.07/55,171
6. Step 6: Final answer
   x = 41,428.54