Finding the Fourth Proportional to 101,185.68, 139,636.42 and 55,863.74

Step by Step Solution

1. Step 1: Write the proportion equation
   101,185.68 : 139,636.42 = 55,863.74 : x
2. Step 2: Convert to fraction form
   101,185.68/139,636.42 = 55,863.74/x
3. Step 3: Cross multiply
   101,185.68x = 139,636.42 × 55,863.74
4. Step 4: Simplify right side
   101,185.68x = 7,800,612,661.41
5. Step 5: Solve for x
   x = 7,800,612,661.41/101,185.68
6. Step 6: Final answer
   x = 77,092.06