Finding the Fourth Proportional to 118,897.72, 164,074.49 and 65,181.55

Step by Step Solution

1. Step 1: Write the proportion equation
   118,897.72 : 164,074.49 = 65,181.55 : x
2. Step 2: Convert to fraction form
   118,897.72/164,074.49 = 65,181.55/x
3. Step 3: Cross multiply
   118,897.72x = 164,074.49 × 65,181.55
4. Step 4: Simplify right side
   118,897.72x = 10,694,629,573.66
5. Step 5: Solve for x
   x = 10,694,629,573.66/118,897.72
6. Step 6: Final answer
   x = 89,948.15