Finding the Fourth Proportional to 82,143.72, 113,417.82 and 53,931.42

Step by Step Solution

1. Step 1: Write the proportion equation
   82,143.72 : 113,417.82 = 53,931.42 : x
2. Step 2: Convert to fraction form
   82,143.72/113,417.82 = 53,931.42/x
3. Step 3: Cross multiply
   82,143.72x = 113,417.82 × 53,931.42
4. Step 4: Simplify right side
   82,143.72x = 6,116,784,085.90
5. Step 5: Solve for x
   x = 6,116,784,085.90/82,143.72
6. Step 6: Final answer
   x = 74,464.42