Finding the Fourth Proportional to 80,578.19, 120,752.69 and 59,351.31

Step by Step Solution

1. Step 1: Write the proportion equation
   80,578.19 : 120,752.69 = 59,351.31 : x
2. Step 2: Convert to fraction form
   80,578.19/120,752.69 = 59,351.31/x
3. Step 3: Cross multiply
   80,578.19x = 120,752.69 × 59,351.31
4. Step 4: Simplify right side
   80,578.19x = 7,166,830,040.77
5. Step 5: Solve for x
   x = 7,166,830,040.77/80,578.19
6. Step 6: Final answer
   x = 88,942.55