Finding the Fourth Proportional to 120,123.17, 165,764.76 and 65,674.29

Step by Step Solution

1. Step 1: Write the proportion equation
   120,123.17 : 165,764.76 = 65,674.29 : x
2. Step 2: Convert to fraction form
   120,123.17/165,764.76 = 65,674.29/x
3. Step 3: Cross multiply
   120,123.17x = 165,764.76 × 65,674.29
4. Step 4: Simplify right side
   120,123.17x = 10,886,482,920.02
5. Step 5: Solve for x
   x = 10,886,482,920.02/120,123.17
6. Step 6: Final answer
   x = 90,627.67