Finding the Fourth Proportional to 87,698.79, 131,567.63 and 40,926.15

Step by Step Solution

1. Step 1: Write the proportion equation
   87,698.79 : 131,567.63 = 40,926.15 : x
2. Step 2: Convert to fraction form
   87,698.79/131,567.63 = 40,926.15/x
3. Step 3: Cross multiply
   87,698.79x = 131,567.63 × 40,926.15
4. Step 4: Simplify right side
   87,698.79x = 5,384,556,355.89
5. Step 5: Solve for x
   x = 5,384,556,355.89/87,698.79
6. Step 6: Final answer
   x = 61,398.30