Finding the Fourth Proportional to 496,724.57, 745,093.69 and 141,738.47

Step by Step Solution

1. Step 1: Write the proportion equation
   496,724.57 : 745,093.69 = 141,738.47 : x
2. Step 2: Convert to fraction form
   496,724.57/745,093.69 = 141,738.47/x
3. Step 3: Cross multiply
   496,724.57x = 745,093.69 × 141,738.47
4. Step 4: Simplify right side
   496,724.57x = 105,608,442,532.69
5. Step 5: Solve for x
   x = 105,608,442,532.69/496,724.57
6. Step 6: Final answer
   x = 212,609.66