Finding the Fourth Proportional to 132,570.79, 182,947.36 and 72,141.42

Step by Step Solution

1. Step 1: Write the proportion equation
   132,570.79 : 182,947.36 = 72,141.42 : x
2. Step 2: Convert to fraction form
   132,570.79/182,947.36 = 72,141.42/x
3. Step 3: Cross multiply
   132,570.79x = 182,947.36 × 72,141.42
4. Step 4: Simplify right side
   132,570.79x = 13,198,081,947.54
5. Step 5: Solve for x
   x = 13,198,081,947.54/132,570.79
6. Step 6: Final answer
   x = 99,554.97