Finding the Fourth Proportional to 256,298.82, 384,530.49 and 123,188.73

Step by Step Solution

1. Step 1: Write the proportion equation
   256,298.82 : 384,530.49 = 123,188.73 : x
2. Step 2: Convert to fraction form
   256,298.82/384,530.49 = 123,188.73/x
3. Step 3: Cross multiply
   256,298.82x = 384,530.49 × 123,188.73
4. Step 4: Simplify right side
   256,298.82x = 47,369,822,709.38
5. Step 5: Solve for x
   x = 47,369,822,709.38/256,298.82
6. Step 6: Final answer
   x = 184,822.63