Finding the Fourth Proportional to 118,074.42, 162,940.68 and 64,359.90

Step by Step Solution

1. Step 1: Write the proportion equation
   118,074.42 : 162,940.68 = 64,359.90 : x
2. Step 2: Convert to fraction form
   118,074.42/162,940.68 = 64,359.90/x
3. Step 3: Cross multiply
   118,074.42x = 162,940.68 × 64,359.90
4. Step 4: Simplify right side
   118,074.42x = 10,486,845,870.73
5. Step 5: Solve for x
   x = 10,486,845,870.73/118,074.42
6. Step 6: Final answer
   x = 88,815.56