Finding the Fourth Proportional to 42,423.64, 63,209.15 and 40,039

Step by Step Solution

1. Step 1: Write the proportion equation
   42,423.64 : 63,209.15 = 40,039 : x
2. Step 2: Convert to fraction form
   42,423.64/63,209.15 = 40,039/x
3. Step 3: Cross multiply
   42,423.64x = 63,209.15 × 40,039
4. Step 4: Simplify right side
   42,423.64x = 2,530,831,156.85
5. Step 5: Solve for x
   x = 2,530,831,156.85/42,423.64
6. Step 6: Final answer
   x = 59,656.15