Finding the Fourth Proportional to 439,915, 607,084.32 and 238,711

Step by Step Solution

1. Step 1: Write the proportion equation
   439,915 : 607,084.32 = 238,711 : x
2. Step 2: Convert to fraction form
   439,915/607,084.32 = 238,711/x
3. Step 3: Cross multiply
   439,915x = 607,084.32 × 238,711
4. Step 4: Simplify right side
   439,915x = 144,917,705,111.52
5. Step 5: Solve for x
   x = 144,917,705,111.52/439,915
6. Step 6: Final answer
   x = 329,422.06