Finding the Fourth Proportional to 87,870.53, 131,805.77 and 35,280

Step by Step Solution

1. Step 1: Write the proportion equation
   87,870.53 : 131,805.77 = 35,280 : x
2. Step 2: Convert to fraction form
   87,870.53/131,805.77 = 35,280/x
3. Step 3: Cross multiply
   87,870.53x = 131,805.77 × 35,280
4. Step 4: Simplify right side
   87,870.53x = 4,650,107,389.20
5. Step 5: Solve for x
   x = 4,650,107,389.20/87,870.53
6. Step 6: Final answer
   x = 52,919.99