Finding the Fourth Proportional to 92,679.42, 139,042.48 and 42,794.48

Step by Step Solution

1. Step 1: Write the proportion equation
   92,679.42 : 139,042.48 = 42,794.48 : x
2. Step 2: Convert to fraction form
   92,679.42/139,042.48 = 42,794.48/x
3. Step 3: Cross multiply
   92,679.42x = 139,042.48 × 42,794.48
4. Step 4: Simplify right side
   92,679.42x = 5,950,250,629.51
5. Step 5: Solve for x
   x = 5,950,250,629.51/92,679.42
6. Step 6: Final answer
   x = 64,202.50