Finding the Fourth Proportional to 31,012.88, 42,784.50 and 24,271.45

Step by Step Solution

1. Step 1: Write the proportion equation
   31,012.88 : 42,784.50 = 24,271.45 : x
2. Step 2: Convert to fraction form
   31,012.88/42,784.50 = 24,271.45/x
3. Step 3: Cross multiply
   31,012.88x = 42,784.50 × 24,271.45
4. Step 4: Simplify right side
   31,012.88x = 1,038,441,836.58
5. Step 5: Solve for x
   x = 1,038,441,836.58/31,012.88
6. Step 6: Final answer
   x = 33,484.22