Finding the Fourth Proportional to 78,471.92, 108,291.94 and 42,661.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,471.92 : 108,291.94 = 42,661.96 : x
2. Step 2: Convert to fraction form
   78,471.92/108,291.94 = 42,661.96/x
3. Step 3: Cross multiply
   78,471.92x = 108,291.94 × 42,661.96
4. Step 4: Simplify right side
   78,471.92x = 4,619,946,035.22
5. Step 5: Solve for x
   x = 4,619,946,035.22/78,471.92
6. Step 6: Final answer
   x = 58,873.87