Finding the Fourth Proportional to 111,242.69, 153,472.55 and 82,240.70

Step by Step Solution

1. Step 1: Write the proportion equation
   111,242.69 : 153,472.55 = 82,240.70 : x
2. Step 2: Convert to fraction form
   111,242.69/153,472.55 = 82,240.70/x
3. Step 3: Cross multiply
   111,242.69x = 153,472.55 × 82,240.70
4. Step 4: Simplify right side
   111,242.69x = 12,621,688,764.22
5. Step 5: Solve for x
   x = 12,621,688,764.22/111,242.69
6. Step 6: Final answer
   x = 113,460.84