Finding the Fourth Proportional to 111,069.43, 166,530.33 and 61,173.02

Step by Step Solution

1. Step 1: Write the proportion equation
   111,069.43 : 166,530.33 = 61,173.02 : x
2. Step 2: Convert to fraction form
   111,069.43/166,530.33 = 61,173.02/x
3. Step 3: Cross multiply
   111,069.43x = 166,530.33 × 61,173.02
4. Step 4: Simplify right side
   111,069.43x = 10,187,163,624.02
5. Step 5: Solve for x
   x = 10,187,163,624.02/111,069.43
6. Step 6: Final answer
   x = 91,718.88