Finding the Fourth Proportional to 479,061.49, 718,469.61 and 142,023.37

Step by Step Solution

1. Step 1: Write the proportion equation
   479,061.49 : 718,469.61 = 142,023.37 : x
2. Step 2: Convert to fraction form
   479,061.49/718,469.61 = 142,023.37/x
3. Step 3: Cross multiply
   479,061.49x = 718,469.61 × 142,023.37
4. Step 4: Simplify right side
   479,061.49x = 102,039,475,254.79
5. Step 5: Solve for x
   x = 102,039,475,254.79/479,061.49
6. Step 6: Final answer
   x = 212,998.70