Finding the Fourth Proportional to 116,642.52, 160,964.76 and 64,959.12

Step by Step Solution

1. Step 1: Write the proportion equation
   116,642.52 : 160,964.76 = 64,959.12 : x
2. Step 2: Convert to fraction form
   116,642.52/160,964.76 = 64,959.12/x
3. Step 3: Cross multiply
   116,642.52x = 160,964.76 × 64,959.12
4. Step 4: Simplify right side
   116,642.52x = 10,456,129,160.61
5. Step 5: Solve for x
   x = 10,456,129,160.61/116,642.52
6. Step 6: Final answer
   x = 89,642.52