Finding the Fourth Proportional to 539,002.98, 743,858.10 and 309,632.04

Step by Step Solution

1. Step 1: Write the proportion equation
   539,002.98 : 743,858.10 = 309,632.04 : x
2. Step 2: Convert to fraction form
   539,002.98/743,858.10 = 309,632.04/x
3. Step 3: Cross multiply
   539,002.98x = 743,858.10 × 309,632.04
4. Step 4: Simplify right side
   539,002.98x = 230,322,300,973.52
5. Step 5: Solve for x
   x = 230,322,300,973.52/539,002.98
6. Step 6: Final answer
   x = 427,311.74