Finding the Fourth Proportional to 112,821.99, 155,709.89 and 65,074.29

Step by Step Solution

1. Step 1: Write the proportion equation
   112,821.99 : 155,709.89 = 65,074.29 : x
2. Step 2: Convert to fraction form
   112,821.99/155,709.89 = 65,074.29/x
3. Step 3: Cross multiply
   112,821.99x = 155,709.89 × 65,074.29
4. Step 4: Simplify right side
   112,821.99x = 10,132,710,537.73
5. Step 5: Solve for x
   x = 10,132,710,537.73/112,821.99
6. Step 6: Final answer
   x = 89,811.49