Finding the Fourth Proportional to 111,116.76, 153,339.94 and 60,128.37

Step by Step Solution

1. Step 1: Write the proportion equation
   111,116.76 : 153,339.94 = 60,128.37 : x
2. Step 2: Convert to fraction form
   111,116.76/153,339.94 = 60,128.37/x
3. Step 3: Cross multiply
   111,116.76x = 153,339.94 × 60,128.37
4. Step 4: Simplify right side
   111,116.76x = 9,220,080,648.10
5. Step 5: Solve for x
   x = 9,220,080,648.10/111,116.76
6. Step 6: Final answer
   x = 82,976.51