Finding the Fourth Proportional to 139,952.51, 209,907.12 and 51,185.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,952.51 : 209,907.12 = 51,185.25 : x
2. Step 2: Convert to fraction form
   139,952.51/209,907.12 = 51,185.25/x
3. Step 3: Cross multiply
   139,952.51x = 209,907.12 × 51,185.25
4. Step 4: Simplify right side
   139,952.51x = 10,744,149,347.51
5. Step 5: Solve for x
   x = 10,744,149,347.51/139,952.51
6. Step 6: Final answer
   x = 76,769.97