Finding the Fourth Proportional to 81,290.94, 112,185.86 and 45,478.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,290.94 : 112,185.86 = 45,478.82 : x
2. Step 2: Convert to fraction form
   81,290.94/112,185.86 = 45,478.82/x
3. Step 3: Cross multiply
   81,290.94x = 112,185.86 × 45,478.82
4. Step 4: Simplify right side
   81,290.94x = 5,102,079,745.16
5. Step 5: Solve for x
   x = 5,102,079,745.16/81,290.94
6. Step 6: Final answer
   x = 62,763.20