Finding the Fourth Proportional to 65,936.79, 91,006.86 and 42,995.25

Step by Step Solution

1. Step 1: Write the proportion equation
   65,936.79 : 91,006.86 = 42,995.25 : x
2. Step 2: Convert to fraction form
   65,936.79/91,006.86 = 42,995.25/x
3. Step 3: Cross multiply
   65,936.79x = 91,006.86 × 42,995.25
4. Step 4: Simplify right side
   65,936.79x = 3,912,862,697.42
5. Step 5: Solve for x
   x = 3,912,862,697.42/65,936.79
6. Step 6: Final answer
   x = 59,342.63