Finding the Fourth Proportional to 52,671.60, 72,672.15 and 31,443.12

Step by Step Solution

1. Step 1: Write the proportion equation
   52,671.60 : 72,672.15 = 31,443.12 : x
2. Step 2: Convert to fraction form
   52,671.60/72,672.15 = 31,443.12/x
3. Step 3: Cross multiply
   52,671.60x = 72,672.15 × 31,443.12
4. Step 4: Simplify right side
   52,671.60x = 2,285,039,133.11
5. Step 5: Solve for x
   x = 2,285,039,133.11/52,671.60
6. Step 6: Final answer
   x = 43,382.76