Finding the Fourth Proportional to 139,063.74, 208,503.42 and 50,305.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,063.74 : 208,503.42 = 50,305.56 : x
2. Step 2: Convert to fraction form
   139,063.74/208,503.42 = 50,305.56/x
3. Step 3: Cross multiply
   139,063.74x = 208,503.42 × 50,305.56
4. Step 4: Simplify right side
   139,063.74x = 10,488,881,305.02
5. Step 5: Solve for x
   x = 10,488,881,305.02/139,063.74
6. Step 6: Final answer
   x = 75,424.99