Finding the Fourth Proportional to 81,627.20, 112,637.76 and 45,809

Step by Step Solution

1. Step 1: Write the proportion equation
   81,627.20 : 112,637.76 = 45,809 : x
2. Step 2: Convert to fraction form
   81,627.20/112,637.76 = 45,809/x
3. Step 3: Cross multiply
   81,627.20x = 112,637.76 × 45,809
4. Step 4: Simplify right side
   81,627.20x = 5,159,823,147.84
5. Step 5: Solve for x
   x = 5,159,823,147.84/81,627.20
6. Step 6: Final answer
   x = 63,212.06