Finding the Fourth Proportional to 31,155.68, 42,994.49 and 17,008.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,155.68 : 42,994.49 = 17,008.53 : x
2. Step 2: Convert to fraction form
   31,155.68/42,994.49 = 17,008.53/x
3. Step 3: Cross multiply
   31,155.68x = 42,994.49 × 17,008.53
4. Step 4: Simplify right side
   31,155.68x = 731,272,987.96
5. Step 5: Solve for x
   x = 731,272,987.96/31,155.68
6. Step 6: Final answer
   x = 23,471.58