Finding the Fourth Proportional to 142,043.51, 196,024.71 and 78,387.23

Step by Step Solution

1. Step 1: Write the proportion equation
   142,043.51 : 196,024.71 = 78,387.23 : x
2. Step 2: Convert to fraction form
   142,043.51/196,024.71 = 78,387.23/x
3. Step 3: Cross multiply
   142,043.51x = 196,024.71 × 78,387.23
4. Step 4: Simplify right side
   142,043.51x = 15,365,833,048.33
5. Step 5: Solve for x
   x = 15,365,833,048.33/142,043.51
6. Step 6: Final answer
   x = 108,176.95