Finding the Fourth Proportional to 111,887.50, 154,404.69 and 61,586.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,887.50 : 154,404.69 = 61,586.50 : x
2. Step 2: Convert to fraction form
   111,887.50/154,404.69 = 61,586.50/x
3. Step 3: Cross multiply
   111,887.50x = 154,404.69 × 61,586.50
4. Step 4: Simplify right side
   111,887.50x = 9,509,244,440.69
5. Step 5: Solve for x
   x = 9,509,244,440.69/111,887.50
6. Step 6: Final answer
   x = 84,989.34