Finding the Fourth Proportional to 78,704.47, 108,609.39 and 42,893.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,704.47 : 108,609.39 = 42,893.77 : x
2. Step 2: Convert to fraction form
   78,704.47/108,609.39 = 42,893.77/x
3. Step 3: Cross multiply
   78,704.47x = 108,609.39 × 42,893.77
4. Step 4: Simplify right side
   78,704.47x = 4,658,666,194.50
5. Step 5: Solve for x
   x = 4,658,666,194.50/78,704.47
6. Step 6: Final answer
   x = 59,191.89