Finding the Fourth Proportional to 117,872.15, 162,667.10 and 72,576.27

Step by Step Solution

1. Step 1: Write the proportion equation
   117,872.15 : 162,667.10 = 72,576.27 : x
2. Step 2: Convert to fraction form
   117,872.15/162,667.10 = 72,576.27/x
3. Step 3: Cross multiply
   117,872.15x = 162,667.10 × 72,576.27
4. Step 4: Simplify right side
   117,872.15x = 11,805,771,369.72
5. Step 5: Solve for x
   x = 11,805,771,369.72/117,872.15
6. Step 6: Final answer
   x = 100,157.43