Finding the Fourth Proportional to 158,545.01, 218,665.05 and 139,384.05

Step by Step Solution

1. Step 1: Write the proportion equation
   158,545.01 : 218,665.05 = 139,384.05 : x
2. Step 2: Convert to fraction form
   158,545.01/218,665.05 = 139,384.05/x
3. Step 3: Cross multiply
   158,545.01x = 218,665.05 × 139,384.05
4. Step 4: Simplify right side
   158,545.01x = 30,478,420,262.45
5. Step 5: Solve for x
   x = 30,478,420,262.45/158,545.01
6. Step 6: Final answer
   x = 192,238.29