Finding the Fourth Proportional to 119,128.12, 164,402.82 and 65,412.76

Step by Step Solution

1. Step 1: Write the proportion equation
   119,128.12 : 164,402.82 = 65,412.76 : x
2. Step 2: Convert to fraction form
   119,128.12/164,402.82 = 65,412.76/x
3. Step 3: Cross multiply
   119,128.12x = 164,402.82 × 65,412.76
4. Step 4: Simplify right side
   119,128.12x = 10,754,042,207.98
5. Step 5: Solve for x
   x = 10,754,042,207.98/119,128.12
6. Step 6: Final answer
   x = 90,272.91