Finding the Fourth Proportional to 86,436.10, 119,010.37 and 73,489.91

Step by Step Solution

1. Step 1: Write the proportion equation
   86,436.10 : 119,010.37 = 73,489.91 : x
2. Step 2: Convert to fraction form
   86,436.10/119,010.37 = 73,489.91/x
3. Step 3: Cross multiply
   86,436.10x = 119,010.37 × 73,489.91
4. Step 4: Simplify right side
   86,436.10x = 8,746,061,012.92
5. Step 5: Solve for x
   x = 8,746,061,012.92/86,436.10
6. Step 6: Final answer
   x = 101,185.29