Finding the Fourth Proportional to 114,992.43, 158,689.31 and 64,691.43

Step by Step Solution

1. Step 1: Write the proportion equation
   114,992.43 : 158,689.31 = 64,691.43 : x
2. Step 2: Convert to fraction form
   114,992.43/158,689.31 = 64,691.43/x
3. Step 3: Cross multiply
   114,992.43x = 158,689.31 × 64,691.43
4. Step 4: Simplify right side
   114,992.43x = 10,265,837,272.71
5. Step 5: Solve for x
   x = 10,265,837,272.71/114,992.43
6. Step 6: Final answer
   x = 89,274.03