Finding the Fourth Proportional to 42,320.90, 58,670.21 and 40,073.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,320.90 : 58,670.21 = 40,073.82 : x
2. Step 2: Convert to fraction form
   42,320.90/58,670.21 = 40,073.82/x
3. Step 3: Cross multiply
   42,320.90x = 58,670.21 × 40,073.82
4. Step 4: Simplify right side
   42,320.90x = 2,351,139,234.53
5. Step 5: Solve for x
   x = 2,351,139,234.53/42,320.90
6. Step 6: Final answer
   x = 55,555.05