Finding the Fourth Proportional to 108,380.16, 149,454.72 and 65,897.28

Step by Step Solution

1. Step 1: Write the proportion equation
   108,380.16 : 149,454.72 = 65,897.28 : x
2. Step 2: Convert to fraction form
   108,380.16/149,454.72 = 65,897.28/x
3. Step 3: Cross multiply
   108,380.16x = 149,454.72 × 65,897.28
4. Step 4: Simplify right side
   108,380.16x = 9,848,659,531.16
5. Step 5: Solve for x
   x = 9,848,659,531.16/108,380.16
6. Step 6: Final answer
   x = 90,871.42