Finding the Fourth Proportional to 76,851.36, 106,054.67 and 42,859.89

Step by Step Solution

1. Step 1: Write the proportion equation
   76,851.36 : 106,054.67 = 42,859.89 : x
2. Step 2: Convert to fraction form
   76,851.36/106,054.67 = 42,859.89/x
3. Step 3: Cross multiply
   76,851.36x = 106,054.67 × 42,859.89
4. Step 4: Simplify right side
   76,851.36x = 4,545,491,597.34
5. Step 5: Solve for x
   x = 4,545,491,597.34/76,851.36
6. Step 6: Final answer
   x = 59,146.53