Finding the Fourth Proportional to 87,667.32, 131,532.21 and 28,503.15

Step by Step Solution

1. Step 1: Write the proportion equation
   87,667.32 : 131,532.21 = 28,503.15 : x
2. Step 2: Convert to fraction form
   87,667.32/131,532.21 = 28,503.15/x
3. Step 3: Cross multiply
   87,667.32x = 131,532.21 × 28,503.15
4. Step 4: Simplify right side
   87,667.32x = 3,749,082,311.46
5. Step 5: Solve for x
   x = 3,749,082,311.46/87,667.32
6. Step 6: Final answer
   x = 42,764.88