Finding the Fourth Proportional to 116,128.56, 160,257.30 and 65,827.56

Step by Step Solution

1. Step 1: Write the proportion equation
   116,128.56 : 160,257.30 = 65,827.56 : x
2. Step 2: Convert to fraction form
   116,128.56/160,257.30 = 65,827.56/x
3. Step 3: Cross multiply
   116,128.56x = 160,257.30 × 65,827.56
4. Step 4: Simplify right side
   116,128.56x = 10,549,347,031.19
5. Step 5: Solve for x
   x = 10,549,347,031.19/116,128.56
6. Step 6: Final answer
   x = 90,841.97