Finding the Fourth Proportional to 111,600.18, 153,951.12 and 71,271.54

Step by Step Solution

1. Step 1: Write the proportion equation
   111,600.18 : 153,951.12 = 71,271.54 : x
2. Step 2: Convert to fraction form
   111,600.18/153,951.12 = 71,271.54/x
3. Step 3: Cross multiply
   111,600.18x = 153,951.12 × 71,271.54
4. Step 4: Simplify right side
   111,600.18x = 10,972,333,407.12
5. Step 5: Solve for x
   x = 10,972,333,407.12/111,600.18
6. Step 6: Final answer
   x = 98,318.24