Finding the Fourth Proportional to 118,233.28, 163,162.88 and 64,518.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118,233.28 : 163,162.88 = 64,518.72 : x
2. Step 2: Convert to fraction form
   118,233.28/163,162.88 = 64,518.72/x
3. Step 3: Cross multiply
   118,233.28x = 163,162.88 × 64,518.72
4. Step 4: Simplify right side
   118,233.28x = 10,527,060,169.11
5. Step 5: Solve for x
   x = 10,527,060,169.11/118,233.28
6. Step 6: Final answer
   x = 89,036.35