Finding the Fourth Proportional to 119,648.72, 165,115.53 and 65,201.31

Step by Step Solution

1. Step 1: Write the proportion equation
   119,648.72 : 165,115.53 = 65,201.31 : x
2. Step 2: Convert to fraction form
   119,648.72/165,115.53 = 65,201.31/x
3. Step 3: Cross multiply
   119,648.72x = 165,115.53 × 65,201.31
4. Step 4: Simplify right side
   119,648.72x = 10,765,748,857.34
5. Step 5: Solve for x
   x = 10,765,748,857.34/119,648.72
6. Step 6: Final answer
   x = 89,977.97