Finding the Fourth Proportional to 78,401.24, 108,194.63 and 42,591.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,401.24 : 108,194.63 = 42,591.81 : x
2. Step 2: Convert to fraction form
   78,401.24/108,194.63 = 42,591.81/x
3. Step 3: Cross multiply
   78,401.24x = 108,194.63 × 42,591.81
4. Step 4: Simplify right side
   78,401.24x = 4,608,204,911.02
5. Step 5: Solve for x
   x = 4,608,204,911.02/78,401.24
6. Step 6: Final answer
   x = 58,777.20