Finding the Fourth Proportional to 81,048.06, 111,846.42 and 45,238.05

Step by Step Solution

1. Step 1: Write the proportion equation
   81,048.06 : 111,846.42 = 45,238.05 : x
2. Step 2: Convert to fraction form
   81,048.06/111,846.42 = 45,238.05/x
3. Step 3: Cross multiply
   81,048.06x = 111,846.42 × 45,238.05
4. Step 4: Simplify right side
   81,048.06x = 5,059,713,940.28
5. Step 5: Solve for x
   x = 5,059,713,940.28/81,048.06
6. Step 6: Final answer
   x = 62,428.56