Finding the Fourth Proportional to 92,691.51, 139,078.80 and 42,744.83

Step by Step Solution

1. Step 1: Write the proportion equation
   92,691.51 : 139,078.80 = 42,744.83 : x
2. Step 2: Convert to fraction form
   92,691.51/139,078.80 = 42,744.83/x
3. Step 3: Cross multiply
   92,691.51x = 139,078.80 × 42,744.83
4. Step 4: Simplify right side
   92,691.51x = 5,944,899,662.60
5. Step 5: Solve for x
   x = 5,944,899,662.60/92,691.51
6. Step 6: Final answer
   x = 64,136.40