Finding the Fourth Proportional to 117,458.38, 162,012.27 and 74,997.78

Step by Step Solution

1. Step 1: Write the proportion equation
   117,458.38 : 162,012.27 = 74,997.78 : x
2. Step 2: Convert to fraction form
   117,458.38/162,012.27 = 74,997.78/x
3. Step 3: Cross multiply
   117,458.38x = 162,012.27 × 74,997.78
4. Step 4: Simplify right side
   117,458.38x = 12,150,560,582.76
5. Step 5: Solve for x
   x = 12,150,560,582.76/117,458.38
6. Step 6: Final answer
   x = 103,445.67