Finding the Fourth Proportional to 126,019.32, 173,910.60 and 72,314.16

Step by Step Solution

1. Step 1: Write the proportion equation
   126,019.32 : 173,910.60 = 72,314.16 : x
2. Step 2: Convert to fraction form
   126,019.32/173,910.60 = 72,314.16/x
3. Step 3: Cross multiply
   126,019.32x = 173,910.60 × 72,314.16
4. Step 4: Simplify right side
   126,019.32x = 12,576,198,954.10
5. Step 5: Solve for x
   x = 12,576,198,954.10/126,019.32
6. Step 6: Final answer
   x = 99,795.80