Finding the Fourth Proportional to 83,131.38, 124,725.69 and 45,643.41

Step by Step Solution

1. Step 1: Write the proportion equation
   83,131.38 : 124,725.69 = 45,643.41 : x
2. Step 2: Convert to fraction form
   83,131.38/124,725.69 = 45,643.41/x
3. Step 3: Cross multiply
   83,131.38x = 124,725.69 × 45,643.41
4. Step 4: Simplify right side
   83,131.38x = 5,692,905,806.20
5. Step 5: Solve for x
   x = 5,692,905,806.20/83,131.38
6. Step 6: Final answer
   x = 68,480.83