Finding the Fourth Proportional to 81,113.10, 111,919.82 and 45,297.60

Step by Step Solution

1. Step 1: Write the proportion equation
   81,113.10 : 111,919.82 = 45,297.60 : x
2. Step 2: Convert to fraction form
   81,113.10/111,919.82 = 45,297.60/x
3. Step 3: Cross multiply
   81,113.10x = 111,919.82 × 45,297.60
4. Step 4: Simplify right side
   81,113.10x = 5,069,699,238.43
5. Step 5: Solve for x
   x = 5,069,699,238.43/81,113.10
6. Step 6: Final answer
   x = 62,501.61