Finding the Fourth Proportional to 118,929.45, 164,122.56 and 65,215.34

Step by Step Solution

1. Step 1: Write the proportion equation
   118,929.45 : 164,122.56 = 65,215.34 : x
2. Step 2: Convert to fraction form
   118,929.45/164,122.56 = 65,215.34/x
3. Step 3: Cross multiply
   118,929.45x = 164,122.56 × 65,215.34
4. Step 4: Simplify right side
   118,929.45x = 10,703,307,731.46
5. Step 5: Solve for x
   x = 10,703,307,731.46/118,929.45
6. Step 6: Final answer
   x = 89,997.12