Finding the Fourth Proportional to 253,438.88, 380,010.69 and 111,278.48

Step by Step Solution

1. Step 1: Write the proportion equation
   253,438.88 : 380,010.69 = 111,278.48 : x
2. Step 2: Convert to fraction form
   253,438.88/380,010.69 = 111,278.48/x
3. Step 3: Cross multiply
   253,438.88x = 380,010.69 × 111,278.48
4. Step 4: Simplify right side
   253,438.88x = 42,287,010,066.90
5. Step 5: Solve for x
   x = 42,287,010,066.90/253,438.88
6. Step 6: Final answer
   x = 166,852.90