Finding the Fourth Proportional to 142,570.32, 196,746.33 and 78,907.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,570.32 : 196,746.33 = 78,907.96 : x
2. Step 2: Convert to fraction form
   142,570.32/196,746.33 = 78,907.96/x
3. Step 3: Cross multiply
   142,570.32x = 196,746.33 × 78,907.96
4. Step 4: Simplify right side
   142,570.32x = 15,524,851,537.79
5. Step 5: Solve for x
   x = 15,524,851,537.79/142,570.32
6. Step 6: Final answer
   x = 108,892.59