Finding the Fourth Proportional to 78,164.65, 107,867.60 and 42,354.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,164.65 : 107,867.60 = 42,354.73 : x
2. Step 2: Convert to fraction form
   78,164.65/107,867.60 = 42,354.73/x
3. Step 3: Cross multiply
   78,164.65x = 107,867.60 × 42,354.73
4. Step 4: Simplify right side
   78,164.65x = 4,568,702,967.86
5. Step 5: Solve for x
   x = 4,568,702,967.86/78,164.65
6. Step 6: Final answer
   x = 58,449.73