Finding the Fourth Proportional to 42,649.08, 58,824 and 31,315.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,649.08 : 58,824 = 31,315.02 : x
2. Step 2: Convert to fraction form
   42,649.08/58,824 = 31,315.02/x
3. Step 3: Cross multiply
   42,649.08x = 58,824 × 31,315.02
4. Step 4: Simplify right side
   42,649.08x = 1,842,074,736.48
5. Step 5: Solve for x
   x = 1,842,074,736.48/42,649.08
6. Step 6: Final answer
   x = 43,191.43