Finding the Fourth Proportional to 123,022.80, 184,480.20 and 56,440.80

Step by Step Solution

1. Step 1: Write the proportion equation
   123,022.80 : 184,480.20 = 56,440.80 : x
2. Step 2: Convert to fraction form
   123,022.80/184,480.20 = 56,440.80/x
3. Step 3: Cross multiply
   123,022.80x = 184,480.20 × 56,440.80
4. Step 4: Simplify right side
   123,022.80x = 10,412,210,072.16
5. Step 5: Solve for x
   x = 10,412,210,072.16/123,022.80
6. Step 6: Final answer
   x = 84,636.43