Finding the Fourth Proportional to 42,439.04, 58,579.60 and 30,536.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,439.04 : 58,579.60 = 30,536.96 : x
2. Step 2: Convert to fraction form
   42,439.04/58,579.60 = 30,536.96/x
3. Step 3: Cross multiply
   42,439.04x = 58,579.60 × 30,536.96
4. Step 4: Simplify right side
   42,439.04x = 1,788,842,902.02
5. Step 5: Solve for x
   x = 1,788,842,902.02/42,439.04
6. Step 6: Final answer
   x = 42,150.88