Finding the Fourth Proportional to 118,162.40, 163,062.72 and 64,447.85

Step by Step Solution

1. Step 1: Write the proportion equation
   118,162.40 : 163,062.72 = 64,447.85 : x
2. Step 2: Convert to fraction form
   118,162.40/163,062.72 = 64,447.85/x
3. Step 3: Cross multiply
   118,162.40x = 163,062.72 × 64,447.85
4. Step 4: Simplify right side
   118,162.40x = 10,509,042,126.81
5. Step 5: Solve for x
   x = 10,509,042,126.81/118,162.40
6. Step 6: Final answer
   x = 88,937.28