Finding the Fourth Proportional to 142,492.37, 196,645.25 and 78,829.07

Step by Step Solution

1. Step 1: Write the proportion equation
   142,492.37 : 196,645.25 = 78,829.07 : x
2. Step 2: Convert to fraction form
   142,492.37/196,645.25 = 78,829.07/x
3. Step 3: Cross multiply
   142,492.37x = 196,645.25 × 78,829.07
4. Step 4: Simplify right side
   142,492.37x = 15,501,361,391.26
5. Step 5: Solve for x
   x = 15,501,361,391.26/142,492.37
6. Step 6: Final answer
   x = 108,787.31