Finding the Fourth Proportional to 108,050.97, 148,931.86 and 72,227.91

Step by Step Solution

1. Step 1: Write the proportion equation
   108,050.97 : 148,931.86 = 72,227.91 : x
2. Step 2: Convert to fraction form
   108,050.97/148,931.86 = 72,227.91/x
3. Step 3: Cross multiply
   108,050.97x = 148,931.86 × 72,227.91
4. Step 4: Simplify right side
   108,050.97x = 10,757,036,980.21
5. Step 5: Solve for x
   x = 10,757,036,980.21/108,050.97
6. Step 6: Final answer
   x = 99,555.21