Finding the Fourth Proportional to 126,464.55, 174,538.56 and 72,748.59

Step by Step Solution

1. Step 1: Write the proportion equation
   126,464.55 : 174,538.56 = 72,748.59 : x
2. Step 2: Convert to fraction form
   126,464.55/174,538.56 = 72,748.59/x
3. Step 3: Cross multiply
   126,464.55x = 174,538.56 × 72,748.59
4. Step 4: Simplify right side
   126,464.55x = 12,697,434,140.63
5. Step 5: Solve for x
   x = 12,697,434,140.63/126,464.55
6. Step 6: Final answer
   x = 100,403.11