Finding the Fourth Proportional to 72,766.56, 109,191.96 and 30,643.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72,766.56 : 109,191.96 = 30,643.68 : x
2. Step 2: Convert to fraction form
   72,766.56/109,191.96 = 30,643.68/x
3. Step 3: Cross multiply
   72,766.56x = 109,191.96 × 30,643.68
4. Step 4: Simplify right side
   72,766.56x = 3,346,043,480.81
5. Step 5: Solve for x
   x = 3,346,043,480.81/72,766.56
6. Step 6: Final answer
   x = 45,983.26