Finding the Fourth Proportional to 30,685.84, 42,348.52 and 23,118.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,685.84 : 42,348.52 = 23,118.82 : x
2. Step 2: Convert to fraction form
   30,685.84/42,348.52 = 23,118.82/x
3. Step 3: Cross multiply
   30,685.84x = 42,348.52 × 23,118.82
4. Step 4: Simplify right side
   30,685.84x = 979,047,734.17
5. Step 5: Solve for x
   x = 979,047,734.17/30,685.84
6. Step 6: Final answer
   x = 31,905.52