Finding the Fourth Proportional to 55,813, 77,021.97 and 30,664.12

Step by Step Solution

1. Step 1: Write the proportion equation
   55,813 : 77,021.97 = 30,664.12 : x
2. Step 2: Convert to fraction form
   55,813/77,021.97 = 30,664.12/x
3. Step 3: Cross multiply
   55,813x = 77,021.97 × 30,664.12
4. Step 4: Simplify right side
   55,813x = 2,361,810,930.72
5. Step 5: Solve for x
   x = 2,361,810,930.72/55,813
6. Step 6: Final answer
   x = 42,316.50