Finding the Fourth Proportional to 142,007.41, 195,970.89 and 78,345.19

Step by Step Solution

1. Step 1: Write the proportion equation
   142,007.41 : 195,970.89 = 78,345.19 : x
2. Step 2: Convert to fraction form
   142,007.41/195,970.89 = 78,345.19/x
3. Step 3: Cross multiply
   142,007.41x = 195,970.89 × 78,345.19
4. Step 4: Simplify right side
   142,007.41x = 15,353,376,611.52
5. Step 5: Solve for x
   x = 15,353,376,611.52/142,007.41
6. Step 6: Final answer
   x = 108,116.73