Finding the Fourth Proportional to 126,298.50, 174,272.07 and 72,573.12

Step by Step Solution

1. Step 1: Write the proportion equation
   126,298.50 : 174,272.07 = 72,573.12 : x
2. Step 2: Convert to fraction form
   126,298.50/174,272.07 = 72,573.12/x
3. Step 3: Cross multiply
   126,298.50x = 174,272.07 × 72,573.12
4. Step 4: Simplify right side
   126,298.50x = 12,647,467,848.76
5. Step 5: Solve for x
   x = 12,647,467,848.76/126,298.50
6. Step 6: Final answer
   x = 100,139.49