Finding the Fourth Proportional to 77,771.94, 116,658.51 and 21,613.42

Step by Step Solution

1. Step 1: Write the proportion equation
   77,771.94 : 116,658.51 = 21,613.42 : x
2. Step 2: Convert to fraction form
   77,771.94/116,658.51 = 21,613.42/x
3. Step 3: Cross multiply
   77,771.94x = 116,658.51 × 21,613.42
4. Step 4: Simplify right side
   77,771.94x = 2,521,389,373.20
5. Step 5: Solve for x
   x = 2,521,389,373.20/77,771.94
6. Step 6: Final answer
   x = 32,420.30