Finding the Fourth Proportional to 96,719.86, 133,359.78 and 81,585.82

Step by Step Solution

1. Step 1: Write the proportion equation
   96,719.86 : 133,359.78 = 81,585.82 : x
2. Step 2: Convert to fraction form
   96,719.86/133,359.78 = 81,585.82/x
3. Step 3: Cross multiply
   96,719.86x = 133,359.78 × 81,585.82
4. Step 4: Simplify right side
   96,719.86x = 10,880,267,006.32
5. Step 5: Solve for x
   x = 10,880,267,006.32/96,719.86
6. Step 6: Final answer
   x = 112,492.58