Finding the Fourth Proportional to 111,899.58, 154,420.47 and 61,597.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,899.58 : 154,420.47 = 61,597.50 : x
2. Step 2: Convert to fraction form
   111,899.58/154,420.47 = 61,597.50/x
3. Step 3: Cross multiply
   111,899.58x = 154,420.47 × 61,597.50
4. Step 4: Simplify right side
   111,899.58x = 9,511,914,900.83
5. Step 5: Solve for x
   x = 9,511,914,900.83/111,899.58
6. Step 6: Final answer
   x = 85,004.03