Finding the Fourth Proportional to 53,618.38, 73,996.86 and 30,961.60

Step by Step Solution

1. Step 1: Write the proportion equation
   53,618.38 : 73,996.86 = 30,961.60 : x
2. Step 2: Convert to fraction form
   53,618.38/73,996.86 = 30,961.60/x
3. Step 3: Cross multiply
   53,618.38x = 73,996.86 × 30,961.60
4. Step 4: Simplify right side
   53,618.38x = 2,291,061,180.58
5. Step 5: Solve for x
   x = 2,291,061,180.58/53,618.38
6. Step 6: Final answer
   x = 42,729.03