Finding the Fourth Proportional to 111,036.06, 166,480.10 and 61,139.66

Step by Step Solution

1. Step 1: Write the proportion equation
   111,036.06 : 166,480.10 = 61,139.66 : x
2. Step 2: Convert to fraction form
   111,036.06/166,480.10 = 61,139.66/x
3. Step 3: Cross multiply
   111,036.06x = 166,480.10 × 61,139.66
4. Step 4: Simplify right side
   111,036.06x = 10,178,536,710.77
5. Step 5: Solve for x
   x = 10,178,536,710.77/111,036.06
6. Step 6: Final answer
   x = 91,668.75