Finding the Fourth Proportional to 509,507.03, 703,111.82 and 280,059.39

Step by Step Solution

1. Step 1: Write the proportion equation
   509,507.03 : 703,111.82 = 280,059.39 : x
2. Step 2: Convert to fraction form
   509,507.03/703,111.82 = 280,059.39/x
3. Step 3: Cross multiply
   509,507.03x = 703,111.82 × 280,059.39
4. Step 4: Simplify right side
   509,507.03x = 196,913,068,670.33
5. Step 5: Solve for x
   x = 196,913,068,670.33/509,507.03
6. Step 6: Final answer
   x = 386,477.63