Finding the Fourth Proportional to 87,908.60, 131,886.72 and 28,736.48

Step by Step Solution

1. Step 1: Write the proportion equation
   87,908.60 : 131,886.72 = 28,736.48 : x
2. Step 2: Convert to fraction form
   87,908.60/131,886.72 = 28,736.48/x
3. Step 3: Cross multiply
   87,908.60x = 131,886.72 × 28,736.48
4. Step 4: Simplify right side
   87,908.60x = 3,789,960,091.55
5. Step 5: Solve for x
   x = 3,789,960,091.55/87,908.60
6. Step 6: Final answer
   x = 43,112.51