Finding the Fourth Proportional to 117,906.38, 162,714.20 and 64,192.31

Step by Step Solution

1. Step 1: Write the proportion equation
   117,906.38 : 162,714.20 = 64,192.31 : x
2. Step 2: Convert to fraction form
   117,906.38/162,714.20 = 64,192.31/x
3. Step 3: Cross multiply
   117,906.38x = 162,714.20 × 64,192.31
4. Step 4: Simplify right side
   117,906.38x = 10,445,000,367.80
5. Step 5: Solve for x
   x = 10,445,000,367.80/117,906.38
6. Step 6: Final answer
   x = 88,587.24