Finding the Fourth Proportional to 123,046.80, 184,516.20 and 56,464.80

Step by Step Solution

1. Step 1: Write the proportion equation
   123,046.80 : 184,516.20 = 56,464.80 : x
2. Step 2: Convert to fraction form
   123,046.80/184,516.20 = 56,464.80/x
3. Step 3: Cross multiply
   123,046.80x = 184,516.20 × 56,464.80
4. Step 4: Simplify right side
   123,046.80x = 10,418,670,329.76
5. Step 5: Solve for x
   x = 10,418,670,329.76/123,046.80
6. Step 6: Final answer
   x = 84,672.42