Finding the Fourth Proportional to 111,281.50, 153,568.54 and 60,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,281.50 : 153,568.54 = 60,980.50 : x
2. Step 2: Convert to fraction form
   111,281.50/153,568.54 = 60,980.50/x
3. Step 3: Cross multiply
   111,281.50x = 153,568.54 × 60,980.50
4. Step 4: Simplify right side
   111,281.50x = 9,364,686,353.47
5. Step 5: Solve for x
   x = 9,364,686,353.47/111,281.50
6. Step 6: Final answer
   x = 84,153.13