Finding the Fourth Proportional to 78,016.32, 107,662.41 and 42,206.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78,016.32 : 107,662.41 = 42,206.27 : x
2. Step 2: Convert to fraction form
   78,016.32/107,662.41 = 42,206.27/x
3. Step 3: Cross multiply
   78,016.32x = 107,662.41 × 42,206.27
4. Step 4: Simplify right side
   78,016.32x = 4,544,028,207.00
5. Step 5: Solve for x
   x = 4,544,028,207.00/78,016.32
6. Step 6: Final answer
   x = 58,244.59