Finding the Fourth Proportional to 126,014.88, 173,925.72 and 72,336.20

Step by Step Solution

1. Step 1: Write the proportion equation
   126,014.88 : 173,925.72 = 72,336.20 : x
2. Step 2: Convert to fraction form
   126,014.88/173,925.72 = 72,336.20/x
3. Step 3: Cross multiply
   126,014.88x = 173,925.72 × 72,336.20
4. Step 4: Simplify right side
   126,014.88x = 12,581,125,667.06
5. Step 5: Solve for x
   x = 12,581,125,667.06/126,014.88
6. Step 6: Final answer
   x = 99,838.41