Finding the Fourth Proportional to 91,106.54, 136,711.71 and 72,755.18

Step by Step Solution

1. Step 1: Write the proportion equation
   91,106.54 : 136,711.71 = 72,755.18 : x
2. Step 2: Convert to fraction form
   91,106.54/136,711.71 = 72,755.18/x
3. Step 3: Cross multiply
   91,106.54x = 136,711.71 × 72,755.18
4. Step 4: Simplify right side
   91,106.54x = 9,946,485,069.16
5. Step 5: Solve for x
   x = 9,946,485,069.16/91,106.54
6. Step 6: Final answer
   x = 109,174.22