Finding the Fourth Proportional to 171,028.72, 256,551.72 and 52,780.96

Step by Step Solution

1. Step 1: Write the proportion equation
   171,028.72 : 256,551.72 = 52,780.96 : x
2. Step 2: Convert to fraction form
   171,028.72/256,551.72 = 52,780.96/x
3. Step 3: Cross multiply
   171,028.72x = 256,551.72 × 52,780.96
4. Step 4: Simplify right side
   171,028.72x = 13,541,046,071.25
5. Step 5: Solve for x
   x = 13,541,046,071.25/171,028.72
6. Step 6: Final answer
   x = 79,174.11