Finding the Fourth Proportional to 83,405, 115,098.90 and 45,680.60

Step by Step Solution

1. Step 1: Write the proportion equation
   83,405 : 115,098.90 = 45,680.60 : x
2. Step 2: Convert to fraction form
   83,405/115,098.90 = 45,680.60/x
3. Step 3: Cross multiply
   83,405x = 115,098.90 × 45,680.60
4. Step 4: Simplify right side
   83,405x = 5,257,786,811.34
5. Step 5: Solve for x
   x = 5,257,786,811.34/83,405
6. Step 6: Final answer
   x = 63,039.23