Finding the Fourth Proportional to 119,159.89, 164,441.78 and 65,446

Step by Step Solution

1. Step 1: Write the proportion equation
   119,159.89 : 164,441.78 = 65,446 : x
2. Step 2: Convert to fraction form
   119,159.89/164,441.78 = 65,446/x
3. Step 3: Cross multiply
   119,159.89x = 164,441.78 × 65,446
4. Step 4: Simplify right side
   119,159.89x = 10,762,056,733.88
5. Step 5: Solve for x
   x = 10,762,056,733.88/119,159.89
6. Step 6: Final answer
   x = 90,316.10