Finding the Fourth Proportional to 123,340.44, 170,210.76 and 72,354.01

Step by Step Solution

1. Step 1: Write the proportion equation
   123,340.44 : 170,210.76 = 72,354.01 : x
2. Step 2: Convert to fraction form
   123,340.44/170,210.76 = 72,354.01/x
3. Step 3: Cross multiply
   123,340.44x = 170,210.76 × 72,354.01
4. Step 4: Simplify right side
   123,340.44x = 12,315,431,031.15
5. Step 5: Solve for x
   x = 12,315,431,031.15/123,340.44
6. Step 6: Final answer
   x = 99,849.09