Finding the Fourth Proportional to 111,658.50, 154,088.73 and 61,357.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,658.50 : 154,088.73 = 61,357.50 : x
2. Step 2: Convert to fraction form
   111,658.50/154,088.73 = 61,357.50/x
3. Step 3: Cross multiply
   111,658.50x = 154,088.73 × 61,357.50
4. Step 4: Simplify right side
   111,658.50x = 9,454,499,250.98
5. Step 5: Solve for x
   x = 9,454,499,250.98/111,658.50
6. Step 6: Final answer
   x = 84,673.35