Finding the Fourth Proportional to 83,386.71, 115,072.81 and 45,145.25

Step by Step Solution

1. Step 1: Write the proportion equation
   83,386.71 : 115,072.81 = 45,145.25 : x
2. Step 2: Convert to fraction form
   83,386.71/115,072.81 = 45,145.25/x
3. Step 3: Cross multiply
   83,386.71x = 115,072.81 × 45,145.25
4. Step 4: Simplify right side
   83,386.71x = 5,194,990,087.43
5. Step 5: Solve for x
   x = 5,194,990,087.43/83,386.71
6. Step 6: Final answer
   x = 62,299.98