Finding the Fourth Proportional to 250,105.19, 375,188.63 and 81,580.46

Step by Step Solution

1. Step 1: Write the proportion equation
   250,105.19 : 375,188.63 = 81,580.46 : x
2. Step 2: Convert to fraction form
   250,105.19/375,188.63 = 81,580.46/x
3. Step 3: Cross multiply
   250,105.19x = 375,188.63 × 81,580.46
4. Step 4: Simplify right side
   250,105.19x = 30,608,058,738.32
5. Step 5: Solve for x
   x = 30,608,058,738.32/250,105.19
6. Step 6: Final answer
   x = 122,380.74