Finding the Fourth Proportional to 611,111.16, 843,372.81 and 339,179.07

Step by Step Solution

1. Step 1: Write the proportion equation
   611,111.16 : 843,372.81 = 339,179.07 : x
2. Step 2: Convert to fraction form
   611,111.16/843,372.81 = 339,179.07/x
3. Step 3: Cross multiply
   611,111.16x = 843,372.81 × 339,179.07
4. Step 4: Simplify right side
   611,111.16x = 286,054,405,359.09
5. Step 5: Solve for x
   x = 286,054,405,359.09/611,111.16
6. Step 6: Final answer
   x = 468,088.99