Finding the Fourth Proportional to 111,855.18, 154,363.77 and 64,117.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,855.18 : 154,363.77 = 64,117.56 : x
2. Step 2: Convert to fraction form
   111,855.18/154,363.77 = 64,117.56/x
3. Step 3: Cross multiply
   111,855.18x = 154,363.77 × 64,117.56
4. Step 4: Simplify right side
   111,855.18x = 9,897,428,284.80
5. Step 5: Solve for x
   x = 9,897,428,284.80/111,855.18
6. Step 6: Final answer
   x = 88,484.31