Finding the Fourth Proportional to 142,302.42, 196,389.77 and 78,652.62

Step by Step Solution

1. Step 1: Write the proportion equation
   142,302.42 : 196,389.77 = 78,652.62 : x
2. Step 2: Convert to fraction form
   142,302.42/196,389.77 = 78,652.62/x
3. Step 3: Cross multiply
   142,302.42x = 196,389.77 × 78,652.62
4. Step 4: Simplify right side
   142,302.42x = 15,446,569,558.43
5. Step 5: Solve for x
   x = 15,446,569,558.43/142,302.42
6. Step 6: Final answer
   x = 108,547.48