Finding the Fourth Proportional to 31,153.02, 42,989.54 and 17,003.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,153.02 : 42,989.54 = 17,003.12 : x
2. Step 2: Convert to fraction form
   31,153.02/42,989.54 = 17,003.12/x
3. Step 3: Cross multiply
   31,153.02x = 42,989.54 × 17,003.12
4. Step 4: Simplify right side
   31,153.02x = 730,956,307.36
5. Step 5: Solve for x
   x = 730,956,307.36/31,153.02
6. Step 6: Final answer
   x = 23,463.42