Finding the Fourth Proportional to 31,530.73, 43,510.65 and 18,101.11

Step by Step Solution

1. Step 1: Write the proportion equation
   31,530.73 : 43,510.65 = 18,101.11 : x
2. Step 2: Convert to fraction form
   31,530.73/43,510.65 = 18,101.11/x
3. Step 3: Cross multiply
   31,530.73x = 43,510.65 × 18,101.11
4. Step 4: Simplify right side
   31,530.73x = 787,591,061.82
5. Step 5: Solve for x
   x = 787,591,061.82/31,530.73
6. Step 6: Final answer
   x = 24,978.52