Finding the Fourth Proportional to 142,006.37, 195,969.98 and 78,348.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,006.37 : 195,969.98 = 78,348.47 : x
2. Step 2: Convert to fraction form
   142,006.37/195,969.98 = 78,348.47/x
3. Step 3: Cross multiply
   142,006.37x = 195,969.98 × 78,348.47
4. Step 4: Simplify right side
   142,006.37x = 15,353,947,314.95
5. Step 5: Solve for x
   x = 15,353,947,314.95/142,006.37
6. Step 6: Final answer
   x = 108,121.54