Finding the Fourth Proportional to 111,978.67, 154,530.54 and 61,677.67

Step by Step Solution

1. Step 1: Write the proportion equation
   111,978.67 : 154,530.54 = 61,677.67 : x
2. Step 2: Convert to fraction form
   111,978.67/154,530.54 = 61,677.67/x
3. Step 3: Cross multiply
   111,978.67x = 154,530.54 × 61,677.67
4. Step 4: Simplify right side
   111,978.67x = 9,531,083,651.04
5. Step 5: Solve for x
   x = 9,531,083,651.04/111,978.67
6. Step 6: Final answer
   x = 85,115.17