Finding the Fourth Proportional to 31,091.18, 42,914.21 and 17,663.00

Step by Step Solution

1. Step 1: Write the proportion equation
   31,091.18 : 42,914.21 = 17,663.00 : x
2. Step 2: Convert to fraction form
   31,091.18/42,914.21 = 17,663.00/x
3. Step 3: Cross multiply
   31,091.18x = 42,914.21 × 17,663.00
4. Step 4: Simplify right side
   31,091.18x = 757,993,388.34
5. Step 5: Solve for x
   x = 757,993,388.34/31,091.18
6. Step 6: Final answer
   x = 24,379.70