Finding the Fourth Proportional to 72,086.96, 99,488.46 and 59,966.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,086.96 : 99,488.46 = 59,966.04 : x
2. Step 2: Convert to fraction form
   72,086.96/99,488.46 = 59,966.04/x
3. Step 3: Cross multiply
   72,086.96x = 99,488.46 × 59,966.04
4. Step 4: Simplify right side
   72,086.96x = 5,965,928,971.90
5. Step 5: Solve for x
   x = 5,965,928,971.90/72,086.96
6. Step 6: Final answer
   x = 82,760.17