Finding the Fourth Proportional to 81,783.24, 112,828.90 and 45,965

Step by Step Solution

1. Step 1: Write the proportion equation
   81,783.24 : 112,828.90 = 45,965 : x
2. Step 2: Convert to fraction form
   81,783.24/112,828.90 = 45,965/x
3. Step 3: Cross multiply
   81,783.24x = 112,828.90 × 45,965
4. Step 4: Simplify right side
   81,783.24x = 5,186,180,388.50
5. Step 5: Solve for x
   x = 5,186,180,388.50/81,783.24
6. Step 6: Final answer
   x = 63,413.73