Finding the Fourth Proportional to 120,156.63, 165,817.01 and 65,709.04

Step by Step Solution

1. Step 1: Write the proportion equation
   120,156.63 : 165,817.01 = 65,709.04 : x
2. Step 2: Convert to fraction form
   120,156.63/165,817.01 = 65,709.04/x
3. Step 3: Cross multiply
   120,156.63x = 165,817.01 × 65,709.04
4. Step 4: Simplify right side
   120,156.63x = 10,895,676,233.79
5. Step 5: Solve for x
   x = 10,895,676,233.79/120,156.63
6. Step 6: Final answer
   x = 90,678.94