Finding the Fourth Proportional to 495,694, 684,059.54 and 269,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   495,694 : 684,059.54 = 269,339.50 : x
2. Step 2: Convert to fraction form
   495,694/684,059.54 = 269,339.50/x
3. Step 3: Cross multiply
   495,694x = 684,059.54 × 269,339.50
4. Step 4: Simplify right side
   495,694x = 184,244,254,473.83
5. Step 5: Solve for x
   x = 184,244,254,473.83/495,694
6. Step 6: Final answer
   x = 371,689.50