Finding the Fourth Proportional to 359,612, 539,443.92 and 137,996

Step by Step Solution

1. Step 1: Write the proportion equation
   359,612 : 539,443.92 = 137,996 : x
2. Step 2: Convert to fraction form
   359,612/539,443.92 = 137,996/x
3. Step 3: Cross multiply
   359,612x = 539,443.92 × 137,996
4. Step 4: Simplify right side
   359,612x = 74,441,103,184.32
5. Step 5: Solve for x
   x = 74,441,103,184.32/359,612
6. Step 6: Final answer
   x = 207,003.95