Finding the Fourth Proportional to 111,022.50, 153,211.06 and 60,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,022.50 : 153,211.06 = 60,721.50 : x
2. Step 2: Convert to fraction form
   111,022.50/153,211.06 = 60,721.50/x
3. Step 3: Cross multiply
   111,022.50x = 153,211.06 × 60,721.50
4. Step 4: Simplify right side
   111,022.50x = 9,303,205,379.79
5. Step 5: Solve for x
   x = 9,303,205,379.79/111,022.50
6. Step 6: Final answer
   x = 83,795.68