Finding the Fourth Proportional to 496,729.20, 745,100.62 and 141,743.10

Step by Step Solution

1. Step 1: Write the proportion equation
   496,729.20 : 745,100.62 = 141,743.10 : x
2. Step 2: Convert to fraction form
   496,729.20/745,100.62 = 141,743.10/x
3. Step 3: Cross multiply
   496,729.20x = 745,100.62 × 141,743.10
4. Step 4: Simplify right side
   496,729.20x = 105,612,871,690.72
5. Step 5: Solve for x
   x = 105,612,871,690.72/496,729.20
6. Step 6: Final answer
   x = 212,616.60