Finding the Fourth Proportional to 111,463.55, 153,789.94 and 66,103.82

Step by Step Solution

1. Step 1: Write the proportion equation
   111,463.55 : 153,789.94 = 66,103.82 : x
2. Step 2: Convert to fraction form
   111,463.55/153,789.94 = 66,103.82/x
3. Step 3: Cross multiply
   111,463.55x = 153,789.94 × 66,103.82
4. Step 4: Simplify right side
   111,463.55x = 10,166,102,511.57
5. Step 5: Solve for x
   x = 10,166,102,511.57/111,463.55
6. Step 6: Final answer
   x = 91,205.62