Finding the Fourth Proportional to 111,308.72, 153,621.78 and 68,880.92

Step by Step Solution

1. Step 1: Write the proportion equation
   111,308.72 : 153,621.78 = 68,880.92 : x
2. Step 2: Convert to fraction form
   111,308.72/153,621.78 = 68,880.92/x
3. Step 3: Cross multiply
   111,308.72x = 153,621.78 × 68,880.92
4. Step 4: Simplify right side
   111,308.72x = 10,581,609,538.44
5. Step 5: Solve for x
   x = 10,581,609,538.44/111,308.72
6. Step 6: Final answer
   x = 95,065.41