Finding the Fourth Proportional to 81,142.72, 111,981.28 and 45,333.44

Step by Step Solution

1. Step 1: Write the proportion equation
   81,142.72 : 111,981.28 = 45,333.44 : x
2. Step 2: Convert to fraction form
   81,142.72/111,981.28 = 45,333.44/x
3. Step 3: Cross multiply
   81,142.72x = 111,981.28 × 45,333.44
4. Step 4: Simplify right side
   81,142.72x = 5,076,496,638.00
5. Step 5: Solve for x
   x = 5,076,496,638.00/81,142.72
6. Step 6: Final answer
   x = 62,562.56