Finding the Fourth Proportional to 81,153.72, 111,983.58 and 45,345.24

Step by Step Solution

1. Step 1: Write the proportion equation
   81,153.72 : 111,983.58 = 45,345.24 : x
2. Step 2: Convert to fraction form
   81,153.72/111,983.58 = 45,345.24/x
3. Step 3: Cross multiply
   81,153.72x = 111,983.58 × 45,345.24
4. Step 4: Simplify right side
   81,153.72x = 5,077,922,311.16
5. Step 5: Solve for x
   x = 5,077,922,311.16/81,153.72
6. Step 6: Final answer
   x = 62,571.65