Finding the Fourth Proportional to 83,406.38, 115,100.80 and 45,680.90

Step by Step Solution

1. Step 1: Write the proportion equation
   83,406.38 : 115,100.80 = 45,680.90 : x
2. Step 2: Convert to fraction form
   83,406.38/115,100.80 = 45,680.90/x
3. Step 3: Cross multiply
   83,406.38x = 115,100.80 × 45,680.90
4. Step 4: Simplify right side
   83,406.38x = 5,257,907,445.01
5. Step 5: Solve for x
   x = 5,257,907,445.01/83,406.38
6. Step 6: Final answer
   x = 63,039.64