Finding the Fourth Proportional to 118,530.42, 163,522.71 and 77,683.38

Step by Step Solution

1. Step 1: Write the proportion equation
   118,530.42 : 163,522.71 = 77,683.38 : x
2. Step 2: Convert to fraction form
   118,530.42/163,522.71 = 77,683.38/x
3. Step 3: Cross multiply
   118,530.42x = 163,522.71 × 77,683.38
4. Step 4: Simplify right side
   118,530.42x = 12,702,996,819.56
5. Step 5: Solve for x
   x = 12,702,996,819.56/118,530.42
6. Step 6: Final answer
   x = 107,170.77