Finding the Fourth Proportional to 91,109.04, 136,715.46 and 72,757.68

Step by Step Solution

1. Step 1: Write the proportion equation
   91,109.04 : 136,715.46 = 72,757.68 : x
2. Step 2: Convert to fraction form
   91,109.04/136,715.46 = 72,757.68/x
3. Step 3: Cross multiply
   91,109.04x = 136,715.46 × 72,757.68
4. Step 4: Simplify right side
   91,109.04x = 9,947,099,689.73
5. Step 5: Solve for x
   x = 9,947,099,689.73/91,109.04
6. Step 6: Final answer
   x = 109,177.97