Finding the Fourth Proportional to 78,401.76, 108,196.38 and 42,591.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,401.76 : 108,196.38 = 42,591.76 : x
2. Step 2: Convert to fraction form
   78,401.76/108,196.38 = 42,591.76/x
3. Step 3: Cross multiply
   78,401.76x = 108,196.38 × 42,591.76
4. Step 4: Simplify right side
   78,401.76x = 4,608,274,249.83
5. Step 5: Solve for x
   x = 4,608,274,249.83/78,401.76
6. Step 6: Final answer
   x = 58,777.69