Finding the Fourth Proportional to 61,148.39, 91,722.72 and 16,775.78

Step by Step Solution

1. Step 1: Write the proportion equation
   61,148.39 : 91,722.72 = 16,775.78 : x
2. Step 2: Convert to fraction form
   61,148.39/91,722.72 = 16,775.78/x
3. Step 3: Cross multiply
   61,148.39x = 91,722.72 × 16,775.78
4. Step 4: Simplify right side
   61,148.39x = 1,538,720,171.72
5. Step 5: Solve for x
   x = 1,538,720,171.72/61,148.39
6. Step 6: Final answer
   x = 25,163.71