Finding the Fourth Proportional to 139,046.60, 208,445.16 and 50,279.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,046.60 : 208,445.16 = 50,279.24 : x
2. Step 2: Convert to fraction form
   139,046.60/208,445.16 = 50,279.24/x
3. Step 3: Cross multiply
   139,046.60x = 208,445.16 × 50,279.24
4. Step 4: Simplify right side
   139,046.60x = 10,480,464,226.48
5. Step 5: Solve for x
   x = 10,480,464,226.48/139,046.60
6. Step 6: Final answer
   x = 75,373.75