Finding the Fourth Proportional to 117,985.29, 162,819.69 and 64,270.31

Step by Step Solution

1. Step 1: Write the proportion equation
   117,985.29 : 162,819.69 = 64,270.31 : x
2. Step 2: Convert to fraction form
   117,985.29/162,819.69 = 64,270.31/x
3. Step 3: Cross multiply
   117,985.29x = 162,819.69 × 64,270.31
4. Step 4: Simplify right side
   117,985.29x = 10,464,471,136.31
5. Step 5: Solve for x
   x = 10,464,471,136.31/117,985.29
6. Step 6: Final answer
   x = 88,693.02