Finding the Fourth Proportional to 87,982.16, 131,971.94 and 21,422.42

Step by Step Solution

1. Step 1: Write the proportion equation
   87,982.16 : 131,971.94 = 21,422.42 : x
2. Step 2: Convert to fraction form
   87,982.16/131,971.94 = 21,422.42/x
3. Step 3: Cross multiply
   87,982.16x = 131,971.94 × 21,422.42
4. Step 4: Simplify right side
   87,982.16x = 2,827,158,326.89
5. Step 5: Solve for x
   x = 2,827,158,326.89/87,982.16
6. Step 6: Final answer
   x = 32,133.31