Finding the Fourth Proportional to 308,533.94, 462,956.68 and 139,946.82

Step by Step Solution

1. Step 1: Write the proportion equation
   308,533.94 : 462,956.68 = 139,946.82 : x
2. Step 2: Convert to fraction form
   308,533.94/462,956.68 = 139,946.82/x
3. Step 3: Cross multiply
   308,533.94x = 462,956.68 × 139,946.82
4. Step 4: Simplify right side
   308,533.94x = 64,789,315,163.76
5. Step 5: Solve for x
   x = 64,789,315,163.76/308,533.94
6. Step 6: Final answer
   x = 209,990.89