Finding the Fourth Proportional to 120,123, 165,776.04 and 69,143.40

Step by Step Solution

1. Step 1: Write the proportion equation
   120,123 : 165,776.04 = 69,143.40 : x
2. Step 2: Convert to fraction form
   120,123/165,776.04 = 69,143.40/x
3. Step 3: Cross multiply
   120,123x = 165,776.04 × 69,143.40
4. Step 4: Simplify right side
   120,123x = 11,462,319,044.14
5. Step 5: Solve for x
   x = 11,462,319,044.14/120,123
6. Step 6: Final answer
   x = 95,421.52