Finding the Fourth Proportional to 493,540.42, 740,605.56 and 453,387.10

Step by Step Solution

1. Step 1: Write the proportion equation
   493,540.42 : 740,605.56 = 453,387.10 : x
2. Step 2: Convert to fraction form
   493,540.42/740,605.56 = 453,387.10/x
3. Step 3: Cross multiply
   493,540.42x = 740,605.56 × 453,387.10
4. Step 4: Simplify right side
   493,540.42x = 335,781,007,092.28
5. Step 5: Solve for x
   x = 335,781,007,092.28/493,540.42
6. Step 6: Final answer
   x = 680,351.59