Finding the Fourth Proportional to 126,061.32, 173,968.62 and 72,356.20

Step by Step Solution

1. Step 1: Write the proportion equation
   126,061.32 : 173,968.62 = 72,356.20 : x
2. Step 2: Convert to fraction form
   126,061.32/173,968.62 = 72,356.20/x
3. Step 3: Cross multiply
   126,061.32x = 173,968.62 × 72,356.20
4. Step 4: Simplify right side
   126,061.32x = 12,587,708,262.44
5. Step 5: Solve for x
   x = 12,587,708,262.44/126,061.32
6. Step 6: Final answer
   x = 99,853.85