Finding the Fourth Proportional to 496,728.69, 745,099.89 and 141,742.62

Step by Step Solution

1. Step 1: Write the proportion equation
   496,728.69 : 745,099.89 = 141,742.62 : x
2. Step 2: Convert to fraction form
   496,728.69/745,099.89 = 141,742.62/x
3. Step 3: Cross multiply
   496,728.69x = 745,099.89 × 141,742.62
4. Step 4: Simplify right side
   496,728.69x = 105,612,410,570.31
5. Step 5: Solve for x
   x = 105,612,410,570.31/496,728.69
6. Step 6: Final answer
   x = 212,615.89