Finding the Fourth Proportional to 126,848.47, 175,053.72 and 72,399.55

Step by Step Solution

1. Step 1: Write the proportion equation
   126,848.47 : 175,053.72 = 72,399.55 : x
2. Step 2: Convert to fraction form
   126,848.47/175,053.72 = 72,399.55/x
3. Step 3: Cross multiply
   126,848.47x = 175,053.72 × 72,399.55
4. Step 4: Simplify right side
   126,848.47x = 12,673,810,553.83
5. Step 5: Solve for x
   x = 12,673,810,553.83/126,848.47
6. Step 6: Final answer
   x = 99,913.00