Finding the Fourth Proportional to 139,843.83, 209,796.13 and 51,097.19

Step by Step Solution

1. Step 1: Write the proportion equation
   139,843.83 : 209,796.13 = 51,097.19 : x
2. Step 2: Convert to fraction form
   139,843.83/209,796.13 = 51,097.19/x
3. Step 3: Cross multiply
   139,843.83x = 209,796.13 × 51,097.19
4. Step 4: Simplify right side
   139,843.83x = 10,719,993,112.62
5. Step 5: Solve for x
   x = 10,719,993,112.62/139,843.83
6. Step 6: Final answer
   x = 76,656.89