Finding the Fourth Proportional to 278,829.82, 418,243.89 and 79,150.38

Step by Step Solution

1. Step 1: Write the proportion equation
   278,829.82 : 418,243.89 = 79,150.38 : x
2. Step 2: Convert to fraction form
   278,829.82/418,243.89 = 79,150.38/x
3. Step 3: Cross multiply
   278,829.82x = 418,243.89 × 79,150.38
4. Step 4: Simplify right side
   278,829.82x = 33,104,162,826.18
5. Step 5: Solve for x
   x = 33,104,162,826.18/278,829.82
6. Step 6: Final answer
   x = 118,725.33