Finding the Fourth Proportional to 111,039.06, 166,484.61 and 61,142.65

Step by Step Solution

1. Step 1: Write the proportion equation
   111,039.06 : 166,484.61 = 61,142.65 : x
2. Step 2: Convert to fraction form
   111,039.06/166,484.61 = 61,142.65/x
3. Step 3: Cross multiply
   111,039.06x = 166,484.61 × 61,142.65
4. Step 4: Simplify right side
   111,039.06x = 10,179,310,239.62
5. Step 5: Solve for x
   x = 10,179,310,239.62/111,039.06
6. Step 6: Final answer
   x = 91,673.24