Finding the Fourth Proportional to 42,660.10, 58,875.16 and 31,886.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,660.10 : 58,875.16 = 31,886.30 : x
2. Step 2: Convert to fraction form
   42,660.10/58,875.16 = 31,886.30/x
3. Step 3: Cross multiply
   42,660.10x = 58,875.16 × 31,886.30
4. Step 4: Simplify right side
   42,660.10x = 1,877,311,014.31
5. Step 5: Solve for x
   x = 1,877,311,014.31/42,660.10
6. Step 6: Final answer
   x = 44,006.25