Finding the Fourth Proportional to 72,085.46, 99,486.39 and 59,964.54

Step by Step Solution

1. Step 1: Write the proportion equation
   72,085.46 : 99,486.39 = 59,964.54 : x
2. Step 2: Convert to fraction form
   72,085.46/99,486.39 = 59,964.54/x
3. Step 3: Cross multiply
   72,085.46x = 99,486.39 × 59,964.54
4. Step 4: Simplify right side
   72,085.46x = 5,965,655,464.40
5. Step 5: Solve for x
   x = 5,965,655,464.40/72,085.46
6. Step 6: Final answer
   x = 82,758.10