Finding the Fourth Proportional to 42,607.05, 58,904.02 and 31,978.23

Step by Step Solution

1. Step 1: Write the proportion equation
   42,607.05 : 58,904.02 = 31,978.23 : x
2. Step 2: Convert to fraction form
   42,607.05/58,904.02 = 31,978.23/x
3. Step 3: Cross multiply
   42,607.05x = 58,904.02 × 31,978.23
4. Step 4: Simplify right side
   42,607.05x = 1,883,646,299.48
5. Step 5: Solve for x
   x = 1,883,646,299.48/42,607.05
6. Step 6: Final answer
   x = 44,209.73