Finding the Fourth Proportional to 123,046.10, 184,569.15 and 83,680.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,046.10 : 184,569.15 = 83,680.10 : x
2. Step 2: Convert to fraction form
   123,046.10/184,569.15 = 83,680.10/x
3. Step 3: Cross multiply
   123,046.10x = 184,569.15 × 83,680.10
4. Step 4: Simplify right side
   123,046.10x = 15,444,764,928.92
5. Step 5: Solve for x
   x = 15,444,764,928.92/123,046.10
6. Step 6: Final answer
   x = 125,520.15