Finding the Fourth Proportional to 111,229.25, 153,495.50 and 60,240.78

Step by Step Solution

1. Step 1: Write the proportion equation
   111,229.25 : 153,495.50 = 60,240.78 : x
2. Step 2: Convert to fraction form
   111,229.25/153,495.50 = 60,240.78/x
3. Step 3: Cross multiply
   111,229.25x = 153,495.50 × 60,240.78
4. Step 4: Simplify right side
   111,229.25x = 9,246,688,345.29
5. Step 5: Solve for x
   x = 9,246,688,345.29/111,229.25
6. Step 6: Final answer
   x = 83,131.81