Finding the Fourth Proportional to 126,215.64, 174,171.72 and 72,462.82

Step by Step Solution

1. Step 1: Write the proportion equation
   126,215.64 : 174,171.72 = 72,462.82 : x
2. Step 2: Convert to fraction form
   126,215.64/174,171.72 = 72,462.82/x
3. Step 3: Cross multiply
   126,215.64x = 174,171.72 × 72,462.82
4. Step 4: Simplify right side
   126,215.64x = 12,620,973,995.45
5. Step 5: Solve for x
   x = 12,620,973,995.45/126,215.64
6. Step 6: Final answer
   x = 99,995.33