Finding the Fourth Proportional to 116,115, 160,240.56 and 65,139.09

Step by Step Solution

1. Step 1: Write the proportion equation
   116,115 : 160,240.56 = 65,139.09 : x
2. Step 2: Convert to fraction form
   116,115/160,240.56 = 65,139.09/x
3. Step 3: Cross multiply
   116,115x = 160,240.56 × 65,139.09
4. Step 4: Simplify right side
   116,115x = 10,437,924,259.49
5. Step 5: Solve for x
   x = 10,437,924,259.49/116,115
6. Step 6: Final answer
   x = 89,892.99