Finding the Fourth Proportional to 119,379.57, 164,744.64 and 64,931.73

Step by Step Solution

1. Step 1: Write the proportion equation
   119,379.57 : 164,744.64 = 64,931.73 : x
2. Step 2: Convert to fraction form
   119,379.57/164,744.64 = 64,931.73/x
3. Step 3: Cross multiply
   119,379.57x = 164,744.64 × 64,931.73
4. Step 4: Simplify right side
   119,379.57x = 10,697,154,483.43
5. Step 5: Solve for x
   x = 10,697,154,483.43/119,379.57
6. Step 6: Final answer
   x = 89,606.24