Finding the Fourth Proportional to 424,796.75, 637,196.84 and 172,082.02

Step by Step Solution

1. Step 1: Write the proportion equation
   424,796.75 : 637,196.84 = 172,082.02 : x
2. Step 2: Convert to fraction form
   424,796.75/637,196.84 = 172,082.02/x
3. Step 3: Cross multiply
   424,796.75x = 637,196.84 × 172,082.02
4. Step 4: Simplify right side
   424,796.75x = 109,650,115,942.29
5. Step 5: Solve for x
   x = 109,650,115,942.29/424,796.75
6. Step 6: Final answer
   x = 258,123.72