Finding the Fourth Proportional to 123,441.20, 184,870.20 and 83,783.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,441.20 : 184,870.20 = 83,783.60 : x
2. Step 2: Convert to fraction form
   123,441.20/184,870.20 = 83,783.60/x
3. Step 3: Cross multiply
   123,441.20x = 184,870.20 × 83,783.60
4. Step 4: Simplify right side
   123,441.20x = 15,489,090,888.72
5. Step 5: Solve for x
   x = 15,489,090,888.72/123,441.20
6. Step 6: Final answer
   x = 125,477.48