Finding the Fourth Proportional to 139,160.44, 208,756.50 and 50,455.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,160.44 : 208,756.50 = 50,455.72 : x
2. Step 2: Convert to fraction form
   139,160.44/208,756.50 = 50,455.72/x
3. Step 3: Cross multiply
   139,160.44x = 208,756.50 × 50,455.72
4. Step 4: Simplify right side
   139,160.44x = 10,532,959,512.18
5. Step 5: Solve for x
   x = 10,532,959,512.18/139,160.44
6. Step 6: Final answer
   x = 75,689.32