Finding the Fourth Proportional to 78,716.32, 108,627.42 and 42,906.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,716.32 : 108,627.42 = 42,906.47 : x
2. Step 2: Convert to fraction form
   78,716.32/108,627.42 = 42,906.47/x
3. Step 3: Cross multiply
   78,716.32x = 108,627.42 × 42,906.47
4. Step 4: Simplify right side
   78,716.32x = 4,660,819,408.98
5. Step 5: Solve for x
   x = 4,660,819,408.98/78,716.32
6. Step 6: Final answer
   x = 59,210.33