Finding the Fourth Proportional to 168,939, 253,206.27 and 78,860.52

Step by Step Solution

1. Step 1: Write the proportion equation
   168,939 : 253,206.27 = 78,860.52 : x
2. Step 2: Convert to fraction form
   168,939/253,206.27 = 78,860.52/x
3. Step 3: Cross multiply
   168,939x = 253,206.27 × 78,860.52
4. Step 4: Simplify right side
   168,939x = 19,967,978,119.46
5. Step 5: Solve for x
   x = 19,967,978,119.46/168,939
6. Step 6: Final answer
   x = 118,196.38