Finding the Fourth Proportional to 81,629.90, 112,660.63 and 45,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,629.90 : 112,660.63 = 45,339.50 : x
2. Step 2: Convert to fraction form
   81,629.90/112,660.63 = 45,339.50/x
3. Step 3: Cross multiply
   81,629.90x = 112,660.63 × 45,339.50
4. Step 4: Simplify right side
   81,629.90x = 5,107,976,633.89
5. Step 5: Solve for x
   x = 5,107,976,633.89/81,629.90
6. Step 6: Final answer
   x = 62,574.82