Finding the Fourth Proportional to 81,025.16, 111,820.32 and 45,222.14

Step by Step Solution

1. Step 1: Write the proportion equation
   81,025.16 : 111,820.32 = 45,222.14 : x
2. Step 2: Convert to fraction form
   81,025.16/111,820.32 = 45,222.14/x
3. Step 3: Cross multiply
   81,025.16x = 111,820.32 × 45,222.14
4. Step 4: Simplify right side
   81,025.16x = 5,056,754,165.88
5. Step 5: Solve for x
   x = 5,056,754,165.88/81,025.16
6. Step 6: Final answer
   x = 62,409.68