Finding the Fourth Proportional to 78,704.88, 108,609.52 and 42,894.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,704.88 : 108,609.52 = 42,894.12 : x
2. Step 2: Convert to fraction form
   78,704.88/108,609.52 = 42,894.12/x
3. Step 3: Cross multiply
   78,704.88x = 108,609.52 × 42,894.12
4. Step 4: Simplify right side
   78,704.88x = 4,658,709,784.02
5. Step 5: Solve for x
   x = 4,658,709,784.02/78,704.88
6. Step 6: Final answer
   x = 59,192.13