Finding the Fourth Proportional to 439,935.69, 607,111.25 and 238,731.69

Step by Step Solution

1. Step 1: Write the proportion equation
   439,935.69 : 607,111.25 = 238,731.69 : x
2. Step 2: Convert to fraction form
   439,935.69/607,111.25 = 238,731.69/x
3. Step 3: Cross multiply
   439,935.69x = 607,111.25 × 238,731.69
4. Step 4: Simplify right side
   439,935.69x = 144,936,693,741.39
5. Step 5: Solve for x
   x = 144,936,693,741.39/439,935.69
6. Step 6: Final answer
   x = 329,449.73