Finding the Fourth Proportional to 118,043.90, 162,900.60 and 64,328.78

Step by Step Solution

1. Step 1: Write the proportion equation
   118,043.90 : 162,900.60 = 64,328.78 : x
2. Step 2: Convert to fraction form
   118,043.90/162,900.60 = 64,328.78/x
3. Step 3: Cross multiply
   118,043.90x = 162,900.60 × 64,328.78
4. Step 4: Simplify right side
   118,043.90x = 10,479,196,859.27
5. Step 5: Solve for x
   x = 10,479,196,859.27/118,043.90
6. Step 6: Final answer
   x = 88,773.73