Finding the Fourth Proportional to 139,159.44, 208,755 and 50,454.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,159.44 : 208,755 = 50,454.72 : x
2. Step 2: Convert to fraction form
   139,159.44/208,755 = 50,454.72/x
3. Step 3: Cross multiply
   139,159.44x = 208,755 × 50,454.72
4. Step 4: Simplify right side
   139,159.44x = 10,532,675,073.60
5. Step 5: Solve for x
   x = 10,532,675,073.60/139,159.44
6. Step 6: Final answer
   x = 75,687.82