Finding the Fourth Proportional to 78,704.99, 108,609.72 and 42,894.23

Step by Step Solution

1. Step 1: Write the proportion equation
   78,704.99 : 108,609.72 = 42,894.23 : x
2. Step 2: Convert to fraction form
   78,704.99/108,609.72 = 42,894.23/x
3. Step 3: Cross multiply
   78,704.99x = 108,609.72 × 42,894.23
4. Step 4: Simplify right side
   78,704.99x = 4,658,730,095.44
5. Step 5: Solve for x
   x = 4,658,730,095.44/78,704.99
6. Step 6: Final answer
   x = 59,192.31