Finding the Fourth Proportional to 139,277.66, 208,915.94 and 50,531.10

Step by Step Solution

1. Step 1: Write the proportion equation
   139,277.66 : 208,915.94 = 50,531.10 : x
2. Step 2: Convert to fraction form
   139,277.66/208,915.94 = 50,531.10/x
3. Step 3: Cross multiply
   139,277.66x = 208,915.94 × 50,531.10
4. Step 4: Simplify right side
   139,277.66x = 10,556,752,255.73
5. Step 5: Solve for x
   x = 10,556,752,255.73/139,277.66
6. Step 6: Final answer
   x = 75,796.45