Finding the Fourth Proportional to 116,019.17, 160,116.25 and 65,031.09

Step by Step Solution

1. Step 1: Write the proportion equation
   116,019.17 : 160,116.25 = 65,031.09 : x
2. Step 2: Convert to fraction form
   116,019.17/160,116.25 = 65,031.09/x
3. Step 3: Cross multiply
   116,019.17x = 160,116.25 × 65,031.09
4. Step 4: Simplify right side
   116,019.17x = 10,412,534,264.21
5. Step 5: Solve for x
   x = 10,412,534,264.21/116,019.17
6. Step 6: Final answer
   x = 89,748.39