Finding the Fourth Proportional to 116,397.12, 160,641.74 and 65,409.96

Step by Step Solution

1. Step 1: Write the proportion equation
   116,397.12 : 160,641.74 = 65,409.96 : x
2. Step 2: Convert to fraction form
   116,397.12/160,641.74 = 65,409.96/x
3. Step 3: Cross multiply
   116,397.12x = 160,641.74 × 65,409.96
4. Step 4: Simplify right side
   116,397.12x = 10,507,569,787.73
5. Step 5: Solve for x
   x = 10,507,569,787.73/116,397.12
6. Step 6: Final answer
   x = 90,273.45