Finding the Fourth Proportional to 89,129.37, 122,986.83 and 53,306.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,129.37 : 122,986.83 = 53,306.31 : x
2. Step 2: Convert to fraction form
   89,129.37/122,986.83 = 53,306.31/x
3. Step 3: Cross multiply
   89,129.37x = 122,986.83 × 53,306.31
4. Step 4: Simplify right side
   89,129.37x = 6,555,974,085.90
5. Step 5: Solve for x
   x = 6,555,974,085.90/89,129.37
6. Step 6: Final answer
   x = 73,555.71