Finding the Fourth Proportional to 31,150.58, 42,988.77 and 17,723.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,150.58 : 42,988.77 = 17,723.78 : x
2. Step 2: Convert to fraction form
   31,150.58/42,988.77 = 17,723.78/x
3. Step 3: Cross multiply
   31,150.58x = 42,988.77 × 17,723.78
4. Step 4: Simplify right side
   31,150.58x = 761,923,501.95
5. Step 5: Solve for x
   x = 761,923,501.95/31,150.58
6. Step 6: Final answer
   x = 24,459.37