Finding the Fourth Proportional to 132,570.42, 182,946.83 and 72,141.05

Step by Step Solution

1. Step 1: Write the proportion equation
   132,570.42 : 182,946.83 = 72,141.05 : x
2. Step 2: Convert to fraction form
   132,570.42/182,946.83 = 72,141.05/x
3. Step 3: Cross multiply
   132,570.42x = 182,946.83 × 72,141.05
4. Step 4: Simplify right side
   132,570.42x = 13,197,975,675.99
5. Step 5: Solve for x
   x = 13,197,975,675.99/132,570.42
6. Step 6: Final answer
   x = 99,554.45