Finding the Fourth Proportional to 111,216.76, 153,516.50 and 67,609.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,216.76 : 153,516.50 = 67,609.12 : x
2. Step 2: Convert to fraction form
   111,216.76/153,516.50 = 67,609.12/x
3. Step 3: Cross multiply
   111,216.76x = 153,516.50 × 67,609.12
4. Step 4: Simplify right side
   111,216.76x = 10,379,115,470.48
5. Step 5: Solve for x
   x = 10,379,115,470.48/111,216.76
6. Step 6: Final answer
   x = 93,323.30