Finding the Fourth Proportional to 87,401, 120,658.74 and 58,870.64

Step by Step Solution

1. Step 1: Write the proportion equation
   87,401 : 120,658.74 = 58,870.64 : x
2. Step 2: Convert to fraction form
   87,401/120,658.74 = 58,870.64/x
3. Step 3: Cross multiply
   87,401x = 120,658.74 × 58,870.64
4. Step 4: Simplify right side
   87,401x = 7,103,257,245.39
5. Step 5: Solve for x
   x = 7,103,257,245.39/87,401
6. Step 6: Final answer
   x = 81,272.04