Finding the Fourth Proportional to 83,156.24, 114,620.79 and 64,975.17

Step by Step Solution

1. Step 1: Write the proportion equation
   83,156.24 : 114,620.79 = 64,975.17 : x
2. Step 2: Convert to fraction form
   83,156.24/114,620.79 = 64,975.17/x
3. Step 3: Cross multiply
   83,156.24x = 114,620.79 × 64,975.17
4. Step 4: Simplify right side
   83,156.24x = 7,447,505,315.78
5. Step 5: Solve for x
   x = 7,447,505,315.78/83,156.24
6. Step 6: Final answer
   x = 89,560.40