Finding the Fourth Proportional to 59,491.42, 89,211.75 and 31,393.78

Step by Step Solution

1. Step 1: Write the proportion equation
   59,491.42 : 89,211.75 = 31,393.78 : x
2. Step 2: Convert to fraction form
   59,491.42/89,211.75 = 31,393.78/x
3. Step 3: Cross multiply
   59,491.42x = 89,211.75 × 31,393.78
4. Step 4: Simplify right side
   59,491.42x = 2,800,694,052.92
5. Step 5: Solve for x
   x = 2,800,694,052.92/59,491.42
6. Step 6: Final answer
   x = 47,077.28