Finding the Fourth Proportional to 111,215.76, 153,515.12 and 67,608.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,215.76 : 153,515.12 = 67,608.12 : x
2. Step 2: Convert to fraction form
   111,215.76/153,515.12 = 67,608.12/x
3. Step 3: Cross multiply
   111,215.76x = 153,515.12 × 67,608.12
4. Step 4: Simplify right side
   111,215.76x = 10,378,868,654.77
5. Step 5: Solve for x
   x = 10,378,868,654.77/111,215.76
6. Step 6: Final answer
   x = 93,321.92