Finding the Fourth Proportional to 116,459.34, 160,719.59 and 65,488.12

Step by Step Solution

1. Step 1: Write the proportion equation
   116,459.34 : 160,719.59 = 65,488.12 : x
2. Step 2: Convert to fraction form
   116,459.34/160,719.59 = 65,488.12/x
3. Step 3: Cross multiply
   116,459.34x = 160,719.59 × 65,488.12
4. Step 4: Simplify right side
   116,459.34x = 10,525,223,796.27
5. Step 5: Solve for x
   x = 10,525,223,796.27/116,459.34
6. Step 6: Final answer
   x = 90,376.81