Finding the Fourth Proportional to 250,051.89, 375,089.94 and 81,571.89

Step by Step Solution

1. Step 1: Write the proportion equation
   250,051.89 : 375,089.94 = 81,571.89 : x
2. Step 2: Convert to fraction form
   250,051.89/375,089.94 = 81,571.89/x
3. Step 3: Cross multiply
   250,051.89x = 375,089.94 × 81,571.89
4. Step 4: Simplify right side
   250,051.89x = 30,596,795,325.79
5. Step 5: Solve for x
   x = 30,596,795,325.79/250,051.89
6. Step 6: Final answer
   x = 122,361.78