Finding the Fourth Proportional to 83,451.50, 115,165.50 and 45,728.18

Step by Step Solution

1. Step 1: Write the proportion equation
   83,451.50 : 115,165.50 = 45,728.18 : x
2. Step 2: Convert to fraction form
   83,451.50/115,165.50 = 45,728.18/x
3. Step 3: Cross multiply
   83,451.50x = 115,165.50 × 45,728.18
4. Step 4: Simplify right side
   83,451.50x = 5,266,308,713.79
5. Step 5: Solve for x
   x = 5,266,308,713.79/83,451.50
6. Step 6: Final answer
   x = 63,106.22