Finding the Fourth Proportional to 87,573.65, 131,378.94 and 28,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   87,573.65 : 131,378.94 = 28,404.72 : x
2. Step 2: Convert to fraction form
   87,573.65/131,378.94 = 28,404.72/x
3. Step 3: Cross multiply
   87,573.65x = 131,378.94 × 28,404.72
4. Step 4: Simplify right side
   87,573.65x = 3,731,782,004.60
5. Step 5: Solve for x
   x = 3,731,782,004.60/87,573.65
6. Step 6: Final answer
   x = 42,613.07