Finding the Fourth Proportional to 42,539.06, 58,629.72 and 31,184.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,539.06 : 58,629.72 = 31,184.42 : x
2. Step 2: Convert to fraction form
   42,539.06/58,629.72 = 31,184.42/x
3. Step 3: Cross multiply
   42,539.06x = 58,629.72 × 31,184.42
4. Step 4: Simplify right side
   42,539.06x = 1,828,333,812.96
5. Step 5: Solve for x
   x = 1,828,333,812.96/42,539.06
6. Step 6: Final answer
   x = 42,980.12