Finding the Fourth Proportional to 171,900.55, 256,381.36 and 150,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   171,900.55 : 256,381.36 = 150,978.25 : x
2. Step 2: Convert to fraction form
   171,900.55/256,381.36 = 150,978.25/x
3. Step 3: Cross multiply
   171,900.55x = 256,381.36 × 150,978.25
4. Step 4: Simplify right side
   171,900.55x = 38,708,007,783.51
5. Step 5: Solve for x
   x = 38,708,007,783.51/171,900.55
6. Step 6: Final answer
   x = 225,176.76