Finding the Fourth Proportional to 31,152.42, 42,989.67 and 17,005.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152.42 : 42,989.67 = 17,005.50 : x
2. Step 2: Convert to fraction form
   31,152.42/42,989.67 = 17,005.50/x
3. Step 3: Cross multiply
   31,152.42x = 42,989.67 × 17,005.50
4. Step 4: Simplify right side
   31,152.42x = 731,060,833.19
5. Step 5: Solve for x
   x = 731,060,833.19/31,152.42
6. Step 6: Final answer
   x = 23,467.22