Finding the Fourth Proportional to 119,210.79, 164,513.79 and 65,499.29

Step by Step Solution

1. Step 1: Write the proportion equation
   119,210.79 : 164,513.79 = 65,499.29 : x
2. Step 2: Convert to fraction form
   119,210.79/164,513.79 = 65,499.29/x
3. Step 3: Cross multiply
   119,210.79x = 164,513.79 × 65,499.29
4. Step 4: Simplify right side
   119,210.79x = 10,775,536,440.21
5. Step 5: Solve for x
   x = 10,775,536,440.21/119,210.79
6. Step 6: Final answer
   x = 90,390.61