Finding the Fourth Proportional to 111,861.86, 154,369.31 and 61,560.86

Step by Step Solution

1. Step 1: Write the proportion equation
   111,861.86 : 154,369.31 = 61,560.86 : x
2. Step 2: Convert to fraction form
   111,861.86/154,369.31 = 61,560.86/x
3. Step 3: Cross multiply
   111,861.86x = 154,369.31 × 61,560.86
4. Step 4: Simplify right side
   111,861.86x = 9,503,106,401.56
5. Step 5: Solve for x
   x = 9,503,106,401.56/111,861.86
6. Step 6: Final answer
   x = 84,953.95