Finding the Fourth Proportional to 117,906.18, 162,714.78 and 64,188.60

Step by Step Solution

1. Step 1: Write the proportion equation
   117,906.18 : 162,714.78 = 64,188.60 : x
2. Step 2: Convert to fraction form
   117,906.18/162,714.78 = 64,188.60/x
3. Step 3: Cross multiply
   117,906.18x = 162,714.78 × 64,188.60
4. Step 4: Simplify right side
   117,906.18x = 10,444,433,927.51
5. Step 5: Solve for x
   x = 10,444,433,927.51/117,906.18
6. Step 6: Final answer
   x = 88,582.58