Finding the Fourth Proportional to 479,193.46, 661,499.52 and 309,510.34

Step by Step Solution

1. Step 1: Write the proportion equation
   479,193.46 : 661,499.52 = 309,510.34 : x
2. Step 2: Convert to fraction form
   479,193.46/661,499.52 = 309,510.34/x
3. Step 3: Cross multiply
   479,193.46x = 661,499.52 × 309,510.34
4. Step 4: Simplify right side
   479,193.46x = 204,740,941,345.04
5. Step 5: Solve for x
   x = 204,740,941,345.04/479,193.46
6. Step 6: Final answer
   x = 427,261.55