Finding the Fourth Proportional to 76,851.81, 106,055.30 and 42,860.34

Step by Step Solution

1. Step 1: Write the proportion equation
   76,851.81 : 106,055.30 = 42,860.34 : x
2. Step 2: Convert to fraction form
   76,851.81/106,055.30 = 42,860.34/x
3. Step 3: Cross multiply
   76,851.81x = 106,055.30 × 42,860.34
4. Step 4: Simplify right side
   76,851.81x = 4,545,566,216.80
5. Step 5: Solve for x
   x = 4,545,566,216.80/76,851.81
6. Step 6: Final answer
   x = 59,147.16