Finding the Fourth Proportional to 83,422.78, 114,988.75 and 65,241.32

Step by Step Solution

1. Step 1: Write the proportion equation
   83,422.78 : 114,988.75 = 65,241.32 : x
2. Step 2: Convert to fraction form
   83,422.78/114,988.75 = 65,241.32/x
3. Step 3: Cross multiply
   83,422.78x = 114,988.75 × 65,241.32
4. Step 4: Simplify right side
   83,422.78x = 7,502,017,097.10
5. Step 5: Solve for x
   x = 7,502,017,097.10/83,422.78
6. Step 6: Final answer
   x = 89,927.68