Finding the Fourth Proportional to 111,991, 154,550.82 and 61,693.24

Step by Step Solution

1. Step 1: Write the proportion equation
   111,991 : 154,550.82 = 61,693.24 : x
2. Step 2: Convert to fraction form
   111,991/154,550.82 = 61,693.24/x
3. Step 3: Cross multiply
   111,991x = 154,550.82 × 61,693.24
4. Step 4: Simplify right side
   111,991x = 9,534,740,830.46
5. Step 5: Solve for x
   x = 9,534,740,830.46/111,991
6. Step 6: Final answer
   x = 85,138.46