Finding the Fourth Proportional to 171,718.72, 257,576.72 and 53,389.84

Step by Step Solution

1. Step 1: Write the proportion equation
   171,718.72 : 257,576.72 = 53,389.84 : x
2. Step 2: Convert to fraction form
   171,718.72/257,576.72 = 53,389.84/x
3. Step 3: Cross multiply
   171,718.72x = 257,576.72 × 53,389.84
4. Step 4: Simplify right side
   171,718.72x = 13,751,979,868.52
5. Step 5: Solve for x
   x = 13,751,979,868.52/171,718.72
6. Step 6: Final answer
   x = 80,084.34