Finding the Fourth Proportional to 78,164.58, 107,867.49 and 42,354.65

Step by Step Solution

1. Step 1: Write the proportion equation
   78,164.58 : 107,867.49 = 42,354.65 : x
2. Step 2: Convert to fraction form
   78,164.58/107,867.49 = 42,354.65/x
3. Step 3: Cross multiply
   78,164.58x = 107,867.49 × 42,354.65
4. Step 4: Simplify right side
   78,164.58x = 4,568,690,015.29
5. Step 5: Solve for x
   x = 4,568,690,015.29/78,164.58
6. Step 6: Final answer
   x = 58,449.62