Finding the Fourth Proportional to 82,784.88, 113,954.64 and 72,156

Step by Step Solution

1. Step 1: Write the proportion equation
   82,784.88 : 113,954.64 = 72,156 : x
2. Step 2: Convert to fraction form
   82,784.88/113,954.64 = 72,156/x
3. Step 3: Cross multiply
   82,784.88x = 113,954.64 × 72,156
4. Step 4: Simplify right side
   82,784.88x = 8,222,511,003.84
5. Step 5: Solve for x
   x = 8,222,511,003.84/82,784.88
6. Step 6: Final answer
   x = 99,323.83