Finding the Fourth Proportional to 315,300.33, 435,123.63 and 172,069.61

Step by Step Solution

1. Step 1: Write the proportion equation
   315,300.33 : 435,123.63 = 172,069.61 : x
2. Step 2: Convert to fraction form
   315,300.33/435,123.63 = 172,069.61/x
3. Step 3: Cross multiply
   315,300.33x = 435,123.63 × 172,069.61
4. Step 4: Simplify right side
   315,300.33x = 74,871,551,140.27
5. Step 5: Solve for x
   x = 74,871,551,140.27/315,300.33
6. Step 6: Final answer
   x = 237,461.06