Finding the Fourth Proportional to 79,151.30, 109,245.30 and 72,767.78

Step by Step Solution

1. Step 1: Write the proportion equation
   79,151.30 : 109,245.30 = 72,767.78 : x
2. Step 2: Convert to fraction form
   79,151.30/109,245.30 = 72,767.78/x
3. Step 3: Cross multiply
   79,151.30x = 109,245.30 × 72,767.78
4. Step 4: Simplify right side
   79,151.30x = 7,949,538,076.18
5. Step 5: Solve for x
   x = 7,949,538,076.18/79,151.30
6. Step 6: Final answer
   x = 100,434.71