Finding the Fourth Proportional to 101,336.54, 139,839.59 and 55,398.55

Step by Step Solution

1. Step 1: Write the proportion equation
   101,336.54 : 139,839.59 = 55,398.55 : x
2. Step 2: Convert to fraction form
   101,336.54/139,839.59 = 55,398.55/x
3. Step 3: Cross multiply
   101,336.54x = 139,839.59 × 55,398.55
4. Step 4: Simplify right side
   101,336.54x = 7,746,911,280.82
5. Step 5: Solve for x
   x = 7,746,911,280.82/101,336.54
6. Step 6: Final answer
   x = 76,447.36