Finding the Fourth Proportional to 55,811, 77,019.21 and 30,662.12

Step by Step Solution

1. Step 1: Write the proportion equation
   55,811 : 77,019.21 = 30,662.12 : x
2. Step 2: Convert to fraction form
   55,811/77,019.21 = 30,662.12/x
3. Step 3: Cross multiply
   55,811x = 77,019.21 × 30,662.12
4. Step 4: Simplify right side
   55,811x = 2,361,572,259.33
5. Step 5: Solve for x
   x = 2,361,572,259.33/55,811
6. Step 6: Final answer
   x = 42,313.74