Finding the Fourth Proportional to 81,146.68, 111,978.42 and 45,329.56

Step by Step Solution

1. Step 1: Write the proportion equation
   81,146.68 : 111,978.42 = 45,329.56 : x
2. Step 2: Convert to fraction form
   81,146.68/111,978.42 = 45,329.56/x
3. Step 3: Cross multiply
   81,146.68x = 111,978.42 × 45,329.56
4. Step 4: Simplify right side
   81,146.68x = 5,075,932,508.10
5. Step 5: Solve for x
   x = 5,075,932,508.10/81,146.68
6. Step 6: Final answer
   x = 62,552.56