Finding the Fourth Proportional to 111,328.59, 153,617.05 and 67,698.88

Step by Step Solution

1. Step 1: Write the proportion equation
   111,328.59 : 153,617.05 = 67,698.88 : x
2. Step 2: Convert to fraction form
   111,328.59/153,617.05 = 67,698.88/x
3. Step 3: Cross multiply
   111,328.59x = 153,617.05 × 67,698.88
4. Step 4: Simplify right side
   111,328.59x = 10,399,701,895.41
5. Step 5: Solve for x
   x = 10,399,701,895.41/111,328.59
6. Step 6: Final answer
   x = 93,414.48