Finding the Fourth Proportional to 87,945.72, 131,934.80 and 28,784.67

Step by Step Solution

1. Step 1: Write the proportion equation
   87,945.72 : 131,934.80 = 28,784.67 : x
2. Step 2: Convert to fraction form
   87,945.72/131,934.80 = 28,784.67/x
3. Step 3: Cross multiply
   87,945.72x = 131,934.80 × 28,784.67
4. Step 4: Simplify right side
   87,945.72x = 3,797,699,679.52
5. Step 5: Solve for x
   x = 3,797,699,679.52/87,945.72
6. Step 6: Final answer
   x = 43,182.31