Finding the Fourth Proportional to 171,507.38, 257,123.69 and 81,504.93

Step by Step Solution

1. Step 1: Write the proportion equation
   171,507.38 : 257,123.69 = 81,504.93 : x
2. Step 2: Convert to fraction form
   171,507.38/257,123.69 = 81,504.93/x
3. Step 3: Cross multiply
   171,507.38x = 257,123.69 × 81,504.93
4. Step 4: Simplify right side
   171,507.38x = 20,956,846,661.65
5. Step 5: Solve for x
   x = 20,956,846,661.65/171,507.38
6. Step 6: Final answer
   x = 122,192.10