Finding the Fourth Proportional to 42,585.42, 58,342.29 and 40,989.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,585.42 : 58,342.29 = 40,989.24 : x
2. Step 2: Convert to fraction form
   42,585.42/58,342.29 = 40,989.24/x
3. Step 3: Cross multiply
   42,585.42x = 58,342.29 × 40,989.24
4. Step 4: Simplify right side
   42,585.42x = 2,391,406,126.96
5. Step 5: Solve for x
   x = 2,391,406,126.96/42,585.42
6. Step 6: Final answer
   x = 56,155.51