Finding the Fourth Proportional to 65,948.10, 91,002.33 and 39,086.21

Step by Step Solution

1. Step 1: Write the proportion equation
   65,948.10 : 91,002.33 = 39,086.21 : x
2. Step 2: Convert to fraction form
   65,948.10/91,002.33 = 39,086.21/x
3. Step 3: Cross multiply
   65,948.10x = 91,002.33 × 39,086.21
4. Step 4: Simplify right side
   65,948.10x = 3,556,935,725.86
5. Step 5: Solve for x
   x = 3,556,935,725.86/65,948.10
6. Step 6: Final answer
   x = 53,935.38