Finding the Fourth Proportional to 118,613.76, 163,691.87 and 64,903.47

Step by Step Solution

1. Step 1: Write the proportion equation
   118,613.76 : 163,691.87 = 64,903.47 : x
2. Step 2: Convert to fraction form
   118,613.76/163,691.87 = 64,903.47/x
3. Step 3: Cross multiply
   118,613.76x = 163,691.87 × 64,903.47
4. Step 4: Simplify right side
   118,613.76x = 10,624,170,049.27
5. Step 5: Solve for x
   x = 10,624,170,049.27/118,613.76
6. Step 6: Final answer
   x = 89,569.46