Finding the Fourth Proportional to 308,359.91, 462,483.27 and 139,839.72

Step by Step Solution

1. Step 1: Write the proportion equation
   308,359.91 : 462,483.27 = 139,839.72 : x
2. Step 2: Convert to fraction form
   308,359.91/462,483.27 = 139,839.72/x
3. Step 3: Cross multiply
   308,359.91x = 462,483.27 × 139,839.72
4. Step 4: Simplify right side
   308,359.91x = 64,673,529,247.17
5. Step 5: Solve for x
   x = 64,673,529,247.17/308,359.91
6. Step 6: Final answer
   x = 209,733.91