Finding the Fourth Proportional to 123,374.52, 170,250.22 and 72,380.28

Step by Step Solution

1. Step 1: Write the proportion equation
   123,374.52 : 170,250.22 = 72,380.28 : x
2. Step 2: Convert to fraction form
   123,374.52/170,250.22 = 72,380.28/x
3. Step 3: Cross multiply
   123,374.52x = 170,250.22 × 72,380.28
4. Step 4: Simplify right side
   123,374.52x = 12,322,758,593.66
5. Step 5: Solve for x
   x = 12,322,758,593.66/123,374.52
6. Step 6: Final answer
   x = 99,880.90