Finding the Fourth Proportional to 118,978.34, 164,190.11 and 65,263.48

Step by Step Solution

1. Step 1: Write the proportion equation
   118,978.34 : 164,190.11 = 65,263.48 : x
2. Step 2: Convert to fraction form
   118,978.34/164,190.11 = 65,263.48/x
3. Step 3: Cross multiply
   118,978.34x = 164,190.11 × 65,263.48
4. Step 4: Simplify right side
   118,978.34x = 10,715,617,960.18
5. Step 5: Solve for x
   x = 10,715,617,960.18/118,978.34
6. Step 6: Final answer
   x = 90,063.60