Finding the Fourth Proportional to 165,667, 248,405.72 and 76,874.80

Step by Step Solution

1. Step 1: Write the proportion equation
   165,667 : 248,405.72 = 76,874.80 : x
2. Step 2: Convert to fraction form
   165,667/248,405.72 = 76,874.80/x
3. Step 3: Cross multiply
   165,667x = 248,405.72 × 76,874.80
4. Step 4: Simplify right side
   165,667x = 19,096,140,043.86
5. Step 5: Solve for x
   x = 19,096,140,043.86/165,667
6. Step 6: Final answer
   x = 115,268.22