Finding the Fourth Proportional to 83,863.80, 115,729.92 and 45,621.72

Step by Step Solution

1. Step 1: Write the proportion equation
   83,863.80 : 115,729.92 = 45,621.72 : x
2. Step 2: Convert to fraction form
   83,863.80/115,729.92 = 45,621.72/x
3. Step 3: Cross multiply
   83,863.80x = 115,729.92 × 45,621.72
4. Step 4: Simplify right side
   83,863.80x = 5,279,798,005.86
5. Step 5: Solve for x
   x = 5,279,798,005.86/83,863.80
6. Step 6: Final answer
   x = 62,956.82