Finding the Fourth Proportional to 113,728.32, 156,894.34 and 65,954

Step by Step Solution

1. Step 1: Write the proportion equation
   113,728.32 : 156,894.34 = 65,954 : x
2. Step 2: Convert to fraction form
   113,728.32/156,894.34 = 65,954/x
3. Step 3: Cross multiply
   113,728.32x = 156,894.34 × 65,954
4. Step 4: Simplify right side
   113,728.32x = 10,347,809,300.36
5. Step 5: Solve for x
   x = 10,347,809,300.36/113,728.32
6. Step 6: Final answer
   x = 90,987.09