Finding the Fourth Proportional to 439,804.72, 606,931.69 and 238,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   439,804.72 : 606,931.69 = 238,600.72 : x
2. Step 2: Convert to fraction form
   439,804.72/606,931.69 = 238,600.72/x
3. Step 3: Cross multiply
   439,804.72x = 606,931.69 × 238,600.72
4. Step 4: Simplify right side
   439,804.72x = 144,814,338,224.82
5. Step 5: Solve for x
   x = 144,814,338,224.82/439,804.72
6. Step 6: Final answer
   x = 329,269.63