Finding the Fourth Proportional to 116,200.63, 160,356.87 and 65,899.63

Step by Step Solution

1. Step 1: Write the proportion equation
   116,200.63 : 160,356.87 = 65,899.63 : x
2. Step 2: Convert to fraction form
   116,200.63/160,356.87 = 65,899.63/x
3. Step 3: Cross multiply
   116,200.63x = 160,356.87 × 65,899.63
4. Step 4: Simplify right side
   116,200.63x = 10,567,458,400.96
5. Step 5: Solve for x
   x = 10,567,458,400.96/116,200.63
6. Step 6: Final answer
   x = 90,941.49