Finding the Fourth Proportional to 142,094.34, 196,089.12 and 78,432.12

Step by Step Solution

1. Step 1: Write the proportion equation
   142,094.34 : 196,089.12 = 78,432.12 : x
2. Step 2: Convert to fraction form
   142,094.34/196,089.12 = 78,432.12/x
3. Step 3: Cross multiply
   142,094.34x = 196,089.12 × 78,432.12
4. Step 4: Simplify right side
   142,094.34x = 15,379,685,390.53
5. Step 5: Solve for x
   x = 15,379,685,390.53/142,094.34
6. Step 6: Final answer
   x = 108,235.74