Finding the Fourth Proportional to 111,280.26, 153,566.74 and 60,978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111,280.26 : 153,566.74 = 60,978.18 : x
2. Step 2: Convert to fraction form
   111,280.26/153,566.74 = 60,978.18/x
3. Step 3: Cross multiply
   111,280.26x = 153,566.74 × 60,978.18
4. Step 4: Simplify right side
   111,280.26x = 9,364,220,313.73
5. Step 5: Solve for x
   x = 9,364,220,313.73/111,280.26
6. Step 6: Final answer
   x = 84,149.88