Finding the Fourth Proportional to 111,042.72, 153,243.28 and 60,745.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,042.72 : 153,243.28 = 60,745.12 : x
2. Step 2: Convert to fraction form
   111,042.72/153,243.28 = 60,745.12/x
3. Step 3: Cross multiply
   111,042.72x = 153,243.28 × 60,745.12
4. Step 4: Simplify right side
   111,042.72x = 9,308,781,432.79
5. Step 5: Solve for x
   x = 9,308,781,432.79/111,042.72
6. Step 6: Final answer
   x = 83,830.63