Finding the Fourth Proportional to 120,499.94, 166,283.48 and 69,509.61

Step by Step Solution

1. Step 1: Write the proportion equation
   120,499.94 : 166,283.48 = 69,509.61 : x
2. Step 2: Convert to fraction form
   120,499.94/166,283.48 = 69,509.61/x
3. Step 3: Cross multiply
   120,499.94x = 166,283.48 × 69,509.61
4. Step 4: Simplify right side
   120,499.94x = 11,558,300,018.02
5. Step 5: Solve for x
   x = 11,558,300,018.02/120,499.94
6. Step 6: Final answer
   x = 95,919.55