Finding the Fourth Proportional to 51,005.87, 70,396.46 and 42,494.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,005.87 : 70,396.46 = 42,494.50 : x
2. Step 2: Convert to fraction form
   51,005.87/70,396.46 = 42,494.50/x
3. Step 3: Cross multiply
   51,005.87x = 70,396.46 × 42,494.50
4. Step 4: Simplify right side
   51,005.87x = 2,991,462,299.72
5. Step 5: Solve for x
   x = 2,991,462,299.72/51,005.87
6. Step 6: Final answer
   x = 58,649.37