Finding the Fourth Proportional to 118,059.82, 162,920.33 and 64,345.21

Step by Step Solution

1. Step 1: Write the proportion equation
   118,059.82 : 162,920.33 = 64,345.21 : x
2. Step 2: Convert to fraction form
   118,059.82/162,920.33 = 64,345.21/x
3. Step 3: Cross multiply
   118,059.82x = 162,920.33 × 64,345.21
4. Step 4: Simplify right side
   118,059.82x = 10,483,142,525.39
5. Step 5: Solve for x
   x = 10,483,142,525.39/118,059.82
6. Step 6: Final answer
   x = 88,795.18