Finding the Fourth Proportional to 253,718.78, 380,538.47 and 111,532.59

Step by Step Solution

1. Step 1: Write the proportion equation
   253,718.78 : 380,538.47 = 111,532.59 : x
2. Step 2: Convert to fraction form
   253,718.78/380,538.47 = 111,532.59/x
3. Step 3: Cross multiply
   253,718.78x = 380,538.47 × 111,532.59
4. Step 4: Simplify right side
   253,718.78x = 42,442,441,432.57
5. Step 5: Solve for x
   x = 42,442,441,432.57/253,718.78
6. Step 6: Final answer
   x = 167,281.44