Finding the Fourth Proportional to 78,605, 108,474.24 and 42,794.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,605 : 108,474.24 = 42,794.92 : x
2. Step 2: Convert to fraction form
   78,605/108,474.24 = 42,794.92/x
3. Step 3: Cross multiply
   78,605x = 108,474.24 × 42,794.92
4. Step 4: Simplify right side
   78,605x = 4,642,146,422.86
5. Step 5: Solve for x
   x = 4,642,146,422.86/78,605
6. Step 6: Final answer
   x = 59,056.63