Finding the Fourth Proportional to 2,439,353.42, 3,658,697.98 and 642,086.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439,353.42 : 3,658,697.98 = 642,086.39 : x
2. Step 2: Convert to fraction form
   2,439,353.42/3,658,697.98 = 642,086.39/x
3. Step 3: Cross multiply
   2,439,353.42x = 3,658,697.98 × 642,086.39
4. Step 4: Simplify right side
   2,439,353.42x = 2,349,200,185,620.02
5. Step 5: Solve for x
   x = 2,349,200,185,620.02/2,439,353.42
6. Step 6: Final answer
   x = 963,042.16