Finding the Fourth Proportional to 142,576.01, 196,748.70 and 78,910.01

Step by Step Solution

1. Step 1: Write the proportion equation
   142,576.01 : 196,748.70 = 78,910.01 : x
2. Step 2: Convert to fraction form
   142,576.01/196,748.70 = 78,910.01/x
3. Step 3: Cross multiply
   142,576.01x = 196,748.70 × 78,910.01
4. Step 4: Simplify right side
   142,576.01x = 15,525,441,392.62
5. Step 5: Solve for x
   x = 15,525,441,392.62/142,576.01
6. Step 6: Final answer
   x = 108,892.38