Finding the Fourth Proportional to 117,905.38, 162,712.82 and 64,191.31

Step by Step Solution

1. Step 1: Write the proportion equation
   117,905.38 : 162,712.82 = 64,191.31 : x
2. Step 2: Convert to fraction form
   117,905.38/162,712.82 = 64,191.31/x
3. Step 3: Cross multiply
   117,905.38x = 162,712.82 × 64,191.31
4. Step 4: Simplify right side
   117,905.38x = 10,444,748,823.29
5. Step 5: Solve for x
   x = 10,444,748,823.29/117,905.38
6. Step 6: Final answer
   x = 88,585.86