Finding the Fourth Proportional to 315,038.72, 434,740.32 and 171,796.16

Step by Step Solution

1. Step 1: Write the proportion equation
   315,038.72 : 434,740.32 = 171,796.16 : x
2. Step 2: Convert to fraction form
   315,038.72/434,740.32 = 171,796.16/x
3. Step 3: Cross multiply
   315,038.72x = 434,740.32 × 171,796.16
4. Step 4: Simplify right side
   315,038.72x = 74,686,717,573.17
5. Step 5: Solve for x
   x = 74,686,717,573.17/315,038.72
6. Step 6: Final answer
   x = 237,071.55