Finding the Fourth Proportional to 123,740.01, 170,759.75 and 72,785.61

Step by Step Solution

1. Step 1: Write the proportion equation
   123,740.01 : 170,759.75 = 72,785.61 : x
2. Step 2: Convert to fraction form
   123,740.01/170,759.75 = 72,785.61/x
3. Step 3: Cross multiply
   123,740.01x = 170,759.75 × 72,785.61
4. Step 4: Simplify right side
   123,740.01x = 12,428,852,203.27
5. Step 5: Solve for x
   x = 12,428,852,203.27/123,740.01
6. Step 6: Final answer
   x = 100,443.28