Finding the Fourth Proportional to 126,018.91, 173,902.03 and 72,303.09

Step by Step Solution

1. Step 1: Write the proportion equation
   126,018.91 : 173,902.03 = 72,303.09 : x
2. Step 2: Convert to fraction form
   126,018.91/173,902.03 = 72,303.09/x
3. Step 3: Cross multiply
   126,018.91x = 173,902.03 × 72,303.09
4. Step 4: Simplify right side
   126,018.91x = 12,573,654,126.27
5. Step 5: Solve for x
   x = 12,573,654,126.27/126,018.91
6. Step 6: Final answer
   x = 99,775.93