Finding the Fourth Proportional to 118,043.07, 162,899.46 and 64,328.10

Step by Step Solution

1. Step 1: Write the proportion equation
   118,043.07 : 162,899.46 = 64,328.10 : x
2. Step 2: Convert to fraction form
   118,043.07/162,899.46 = 64,328.10/x
3. Step 3: Cross multiply
   118,043.07x = 162,899.46 × 64,328.10
4. Step 4: Simplify right side
   118,043.07x = 10,479,012,141.95
5. Step 5: Solve for x
   x = 10,479,012,141.95/118,043.07
6. Step 6: Final answer
   x = 88,772.79