Finding the Fourth Proportional to 171,667.60, 257,574.30 and 82,875.40

Step by Step Solution

1. Step 1: Write the proportion equation
   171,667.60 : 257,574.30 = 82,875.40 : x
2. Step 2: Convert to fraction form
   171,667.60/257,574.30 = 82,875.40/x
3. Step 3: Cross multiply
   171,667.60x = 257,574.30 × 82,875.40
4. Step 4: Simplify right side
   171,667.60x = 21,346,573,142.22
5. Step 5: Solve for x
   x = 21,346,573,142.22/171,667.60
6. Step 6: Final answer
   x = 124,348.29