Finding the Fourth Proportional to 92,718.81, 139,085.12 and 39,404.81

Step by Step Solution

1. Step 1: Write the proportion equation
   92,718.81 : 139,085.12 = 39,404.81 : x
2. Step 2: Convert to fraction form
   92,718.81/139,085.12 = 39,404.81/x
3. Step 3: Cross multiply
   92,718.81x = 139,085.12 × 39,404.81
4. Step 4: Simplify right side
   92,718.81x = 5,480,622,727.43
5. Step 5: Solve for x
   x = 5,480,622,727.43/92,718.81
6. Step 6: Final answer
   x = 59,110.15