Finding the Fourth Proportional to 123,796.97, 170,880.47 and 72,807.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123,796.97 : 170,880.47 = 72,807.47 : x
2. Step 2: Convert to fraction form
   123,796.97/170,880.47 = 72,807.47/x
3. Step 3: Cross multiply
   123,796.97x = 170,880.47 × 72,807.47
4. Step 4: Simplify right side
   123,796.97x = 12,441,374,693.11
5. Step 5: Solve for x
   x = 12,441,374,693.11/123,796.97
6. Step 6: Final answer
   x = 100,498.22