Finding the Fourth Proportional to 78,067.32, 107,732.86 and 42,257.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,067.32 : 107,732.86 = 42,257.62 : x
2. Step 2: Convert to fraction form
   78,067.32/107,732.86 = 42,257.62/x
3. Step 3: Cross multiply
   78,067.32x = 107,732.86 × 42,257.62
4. Step 4: Simplify right side
   78,067.32x = 4,552,534,259.39
5. Step 5: Solve for x
   x = 4,552,534,259.39/78,067.32
6. Step 6: Final answer
   x = 58,315.49