Finding the Fourth Proportional to 116,095.31, 160,210.06 and 65,120.90

Step by Step Solution

1. Step 1: Write the proportion equation
   116,095.31 : 160,210.06 = 65,120.90 : x
2. Step 2: Convert to fraction form
   116,095.31/160,210.06 = 65,120.90/x
3. Step 3: Cross multiply
   116,095.31x = 160,210.06 × 65,120.90
4. Step 4: Simplify right side
   116,095.31x = 10,433,023,296.25
5. Step 5: Solve for x
   x = 10,433,023,296.25/116,095.31
6. Step 6: Final answer
   x = 89,866.02