Finding the Fourth Proportional to 108,978.35, 163,368.50 and 97,168.55

Step by Step Solution

1. Step 1: Write the proportion equation
   108,978.35 : 163,368.50 = 97,168.55 : x
2. Step 2: Convert to fraction form
   108,978.35/163,368.50 = 97,168.55/x
3. Step 3: Cross multiply
   108,978.35x = 163,368.50 × 97,168.55
4. Step 4: Simplify right side
   108,978.35x = 15,874,278,957.99
5. Step 5: Solve for x
   x = 15,874,278,957.99/108,978.35
6. Step 6: Final answer
   x = 145,664.53