Finding the Fourth Proportional to 139,106.15, 208,680.94 and 44,357.57

Step by Step Solution

1. Step 1: Write the proportion equation
   139,106.15 : 208,680.94 = 44,357.57 : x
2. Step 2: Convert to fraction form
   139,106.15/208,680.94 = 44,357.57/x
3. Step 3: Cross multiply
   139,106.15x = 208,680.94 × 44,357.57
4. Step 4: Simplify right side
   139,106.15x = 9,256,579,403.72
5. Step 5: Solve for x
   x = 9,256,579,403.72/139,106.15
6. Step 6: Final answer
   x = 66,543.28