Finding the Fourth Proportional to 315,816.72, 435,808.71 and 172,577.94

Step by Step Solution

1. Step 1: Write the proportion equation
   315,816.72 : 435,808.71 = 172,577.94 : x
2. Step 2: Convert to fraction form
   315,816.72/435,808.71 = 172,577.94/x
3. Step 3: Cross multiply
   315,816.72x = 435,808.71 × 172,577.94
4. Step 4: Simplify right side
   315,816.72x = 75,210,969,405.86
5. Step 5: Solve for x
   x = 75,210,969,405.86/315,816.72
6. Step 6: Final answer
   x = 238,147.52