Finding the Fourth Proportional to 139,435.56, 209,200.68 and 50,696.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,435.56 : 209,200.68 = 50,696.16 : x
2. Step 2: Convert to fraction form
   139,435.56/209,200.68 = 50,696.16/x
3. Step 3: Cross multiply
   139,435.56x = 209,200.68 × 50,696.16
4. Step 4: Simplify right side
   139,435.56x = 10,605,671,145.39
5. Step 5: Solve for x
   x = 10,605,671,145.39/139,435.56
6. Step 6: Final answer
   x = 76,061.45