Finding the Fourth Proportional to 58,731.36, 81,047.88 and 31,872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   58,731.36 : 81,047.88 = 31,872.72 : x
2. Step 2: Convert to fraction form
   58,731.36/81,047.88 = 31,872.72/x
3. Step 3: Cross multiply
   58,731.36x = 81,047.88 × 31,872.72
4. Step 4: Simplify right side
   58,731.36x = 2,583,216,385.83
5. Step 5: Solve for x
   x = 2,583,216,385.83/58,731.36
6. Step 6: Final answer
   x = 43,983.60