Finding the Fourth Proportional to 319,428.82, 479,039.58 and 106,139.46

Step by Step Solution

1. Step 1: Write the proportion equation
   319,428.82 : 479,039.58 = 106,139.46 : x
2. Step 2: Convert to fraction form
   319,428.82/479,039.58 = 106,139.46/x
3. Step 3: Cross multiply
   319,428.82x = 479,039.58 × 106,139.46
4. Step 4: Simplify right side
   319,428.82x = 50,845,002,339.83
5. Step 5: Solve for x
   x = 50,845,002,339.83/319,428.82
6. Step 6: Final answer
   x = 159,174.75