Finding the Fourth Proportional to 119,385, 164,740.50 and 65,672.28

Step by Step Solution

1. Step 1: Write the proportion equation
   119,385 : 164,740.50 = 65,672.28 : x
2. Step 2: Convert to fraction form
   119,385/164,740.50 = 65,672.28/x
3. Step 3: Cross multiply
   119,385x = 164,740.50 × 65,672.28
4. Step 4: Simplify right side
   119,385x = 10,818,884,243.34
5. Step 5: Solve for x
   x = 10,818,884,243.34/119,385
6. Step 6: Final answer
   x = 90,621.81