Finding the Fourth Proportional to 111,818.50, 154,309.53 and 61,516.42

Step by Step Solution

1. Step 1: Write the proportion equation
   111,818.50 : 154,309.53 = 61,516.42 : x
2. Step 2: Convert to fraction form
   111,818.50/154,309.53 = 61,516.42/x
3. Step 3: Cross multiply
   111,818.50x = 154,309.53 × 61,516.42
4. Step 4: Simplify right side
   111,818.50x = 9,492,569,857.48
5. Step 5: Solve for x
   x = 9,492,569,857.48/111,818.50
6. Step 6: Final answer
   x = 84,892.66