Finding the Fourth Proportional to 78,260.37, 107,996.38 and 42,449.19

Step by Step Solution

1. Step 1: Write the proportion equation
   78,260.37 : 107,996.38 = 42,449.19 : x
2. Step 2: Convert to fraction form
   78,260.37/107,996.38 = 42,449.19/x
3. Step 3: Cross multiply
   78,260.37x = 107,996.38 × 42,449.19
4. Step 4: Simplify right side
   78,260.37x = 4,584,358,853.93
5. Step 5: Solve for x
   x = 4,584,358,853.93/78,260.37
6. Step 6: Final answer
   x = 58,578.29