Finding the Fourth Proportional to 42,381.20, 58,546.80 and 33,872.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,381.20 : 58,546.80 = 33,872.15 : x
2. Step 2: Convert to fraction form
   42,381.20/58,546.80 = 33,872.15/x
3. Step 3: Cross multiply
   42,381.20x = 58,546.80 × 33,872.15
4. Step 4: Simplify right side
   42,381.20x = 1,983,105,698.89
5. Step 5: Solve for x
   x = 1,983,105,698.89/42,381.20
6. Step 6: Final answer
   x = 46,792.11