Finding the Fourth Proportional to 160,171.42, 221,025.72 and 88,541.78

Step by Step Solution

1. Step 1: Write the proportion equation
   160,171.42 : 221,025.72 = 88,541.78 : x
2. Step 2: Convert to fraction form
   160,171.42/221,025.72 = 88,541.78/x
3. Step 3: Cross multiply
   160,171.42x = 221,025.72 × 88,541.78
4. Step 4: Simplify right side
   160,171.42x = 19,570,010,674.58
5. Step 5: Solve for x
   x = 19,570,010,674.58/160,171.42
6. Step 6: Final answer
   x = 122,181.66