Finding the Fourth Proportional to 121,665.42, 182,435.83 and 64,771.65

Step by Step Solution

1. Step 1: Write the proportion equation
   121,665.42 : 182,435.83 = 64,771.65 : x
2. Step 2: Convert to fraction form
   121,665.42/182,435.83 = 64,771.65/x
3. Step 3: Cross multiply
   121,665.42x = 182,435.83 × 64,771.65
4. Step 4: Simplify right side
   121,665.42x = 11,816,669,566.29
5. Step 5: Solve for x
   x = 11,816,669,566.29/121,665.42
6. Step 6: Final answer
   x = 97,124.31