Finding the Fourth Proportional to 172,152.16, 257,994.72 and 83,228.56

Step by Step Solution

1. Step 1: Write the proportion equation
   172,152.16 : 257,994.72 = 83,228.56 : x
2. Step 2: Convert to fraction form
   172,152.16/257,994.72 = 83,228.56/x
3. Step 3: Cross multiply
   172,152.16x = 257,994.72 × 83,228.56
4. Step 4: Simplify right side
   172,152.16x = 21,472,529,033.20
5. Step 5: Solve for x
   x = 21,472,529,033.20/172,152.16
6. Step 6: Final answer
   x = 124,729.94