Finding the Fourth Proportional to 31,000.55, 42,784.10 and 17,570.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,000.55 : 42,784.10 = 17,570.36 : x
2. Step 2: Convert to fraction form
   31,000.55/42,784.10 = 17,570.36/x
3. Step 3: Cross multiply
   31,000.55x = 42,784.10 × 17,570.36
4. Step 4: Simplify right side
   31,000.55x = 751,732,190.16
5. Step 5: Solve for x
   x = 751,732,190.16/31,000.55
6. Step 6: Final answer
   x = 24,248.99