Finding the Fourth Proportional to 123,953.20, 171,090.89 and 72,995.49

Step by Step Solution

1. Step 1: Write the proportion equation
   123,953.20 : 171,090.89 = 72,995.49 : x
2. Step 2: Convert to fraction form
   123,953.20/171,090.89 = 72,995.49/x
3. Step 3: Cross multiply
   123,953.20x = 171,090.89 × 72,995.49
4. Step 4: Simplify right side
   123,953.20x = 12,488,862,985.11
5. Step 5: Solve for x
   x = 12,488,862,985.11/123,953.20
6. Step 6: Final answer
   x = 100,754.66