Finding the Fourth Proportional to 117,882.78, 162,680.31 and 64,169.34

Step by Step Solution

1. Step 1: Write the proportion equation
   117,882.78 : 162,680.31 = 64,169.34 : x
2. Step 2: Convert to fraction form
   117,882.78/162,680.31 = 64,169.34/x
3. Step 3: Cross multiply
   117,882.78x = 162,680.31 × 64,169.34
4. Step 4: Simplify right side
   117,882.78x = 10,439,088,123.70
5. Step 5: Solve for x
   x = 10,439,088,123.70/117,882.78
6. Step 6: Final answer
   x = 88,554.82