Finding the Fourth Proportional to 78,704.66, 108,606.42 and 42,892.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,704.66 : 108,606.42 = 42,892.54 : x
2. Step 2: Convert to fraction form
   78,704.66/108,606.42 = 42,892.54/x
3. Step 3: Cross multiply
   78,704.66x = 108,606.42 × 42,892.54
4. Step 4: Simplify right side
   78,704.66x = 4,658,404,942.59
5. Step 5: Solve for x
   x = 4,658,404,942.59/78,704.66
6. Step 6: Final answer
   x = 59,188.42