Finding the Fourth Proportional to 172,538.28, 258,621.93 and 83,595.42

Step by Step Solution

1. Step 1: Write the proportion equation
   172,538.28 : 258,621.93 = 83,595.42 : x
2. Step 2: Convert to fraction form
   172,538.28/258,621.93 = 83,595.42/x
3. Step 3: Cross multiply
   172,538.28x = 258,621.93 × 83,595.42
4. Step 4: Simplify right side
   172,538.28x = 21,619,608,859.56
5. Step 5: Solve for x
   x = 21,619,608,859.56/172,538.28
6. Step 6: Final answer
   x = 125,303.26