Finding the Fourth Proportional to 123,185.76, 184,790.45 and 56,644.39

Step by Step Solution

1. Step 1: Write the proportion equation
   123,185.76 : 184,790.45 = 56,644.39 : x
2. Step 2: Convert to fraction form
   123,185.76/184,790.45 = 56,644.39/x
3. Step 3: Cross multiply
   123,185.76x = 184,790.45 × 56,644.39
4. Step 4: Simplify right side
   123,185.76x = 10,467,342,318.08
5. Step 5: Solve for x
   x = 10,467,342,318.08/123,185.76
6. Step 6: Final answer
   x = 84,972.02