Finding the Fourth Proportional to 139,272.35, 208,922.34 and 50,532.77

Step by Step Solution

1. Step 1: Write the proportion equation
   139,272.35 : 208,922.34 = 50,532.77 : x
2. Step 2: Convert to fraction form
   139,272.35/208,922.34 = 50,532.77/x
3. Step 3: Cross multiply
   139,272.35x = 208,922.34 × 50,532.77
4. Step 4: Simplify right side
   139,272.35x = 10,557,424,555.08
5. Step 5: Solve for x
   x = 10,557,424,555.08/139,272.35
6. Step 6: Final answer
   x = 75,804.17