Finding the Fourth Proportional to 103,443.44, 142,760.32 and 60,436.80

Step by Step Solution

1. Step 1: Write the proportion equation
   103,443.44 : 142,760.32 = 60,436.80 : x
2. Step 2: Convert to fraction form
   103,443.44/142,760.32 = 60,436.80/x
3. Step 3: Cross multiply
   103,443.44x = 142,760.32 × 60,436.80
4. Step 4: Simplify right side
   103,443.44x = 8,627,976,907.78
5. Step 5: Solve for x
   x = 8,627,976,907.78/103,443.44
6. Step 6: Final answer
   x = 83,407.68