Finding the Fourth Proportional to 111,761.55, 154,219.28 and 64,016.91

Step by Step Solution

1. Step 1: Write the proportion equation
   111,761.55 : 154,219.28 = 64,016.91 : x
2. Step 2: Convert to fraction form
   111,761.55/154,219.28 = 64,016.91/x
3. Step 3: Cross multiply
   111,761.55x = 154,219.28 × 64,016.91
4. Step 4: Simplify right side
   111,761.55x = 9,872,641,447.94
5. Step 5: Solve for x
   x = 9,872,641,447.94/111,761.55
6. Step 6: Final answer
   x = 88,336.65