Finding the Fourth Proportional to 42,606.92, 58,903.84 and 31,978.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,606.92 : 58,903.84 = 31,978.10 : x
2. Step 2: Convert to fraction form
   42,606.92/58,903.84 = 31,978.10/x
3. Step 3: Cross multiply
   42,606.92x = 58,903.84 × 31,978.10
4. Step 4: Simplify right side
   42,606.92x = 1,883,633,073.14
5. Step 5: Solve for x
   x = 1,883,633,073.14/42,606.92
6. Step 6: Final answer
   x = 44,209.55