Finding the Fourth Proportional to 142,151.19, 196,169.90 and 78,493.83

Step by Step Solution

1. Step 1: Write the proportion equation
   142,151.19 : 196,169.90 = 78,493.83 : x
2. Step 2: Convert to fraction form
   142,151.19/196,169.90 = 78,493.83/x
3. Step 3: Cross multiply
   142,151.19x = 196,169.90 × 78,493.83
4. Step 4: Simplify right side
   142,151.19x = 15,398,126,389.25
5. Step 5: Solve for x
   x = 15,398,126,389.25/142,151.19
6. Step 6: Final answer
   x = 108,322.18