Finding the Fourth Proportional to 439,944.61, 607,123.55 and 238,740.61

Step by Step Solution

1. Step 1: Write the proportion equation
   439,944.61 : 607,123.55 = 238,740.61 : x
2. Step 2: Convert to fraction form
   439,944.61/607,123.55 = 238,740.61/x
3. Step 3: Cross multiply
   439,944.61x = 607,123.55 × 238,740.61
4. Step 4: Simplify right side
   439,944.61x = 144,945,046,672.37
5. Step 5: Solve for x
   x = 144,945,046,672.37/439,944.61
6. Step 6: Final answer
   x = 329,462.04