Finding the Fourth Proportional to 109,199.12, 150,635.88 and 72,962.96

Step by Step Solution

1. Step 1: Write the proportion equation
   109,199.12 : 150,635.88 = 72,962.96 : x
2. Step 2: Convert to fraction form
   109,199.12/150,635.88 = 72,962.96/x
3. Step 3: Cross multiply
   109,199.12x = 150,635.88 × 72,962.96
4. Step 4: Simplify right side
   109,199.12x = 10,990,839,687.00
5. Step 5: Solve for x
   x = 10,990,839,687.00/109,199.12
6. Step 6: Final answer
   x = 100,649.53