Finding the Fourth Proportional to 103,040.29, 142,212.75 and 70,748.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,040.29 : 142,212.75 = 70,748.50 : x
2. Step 2: Convert to fraction form
   103,040.29/142,212.75 = 70,748.50/x
3. Step 3: Cross multiply
   103,040.29x = 142,212.75 × 70,748.50
4. Step 4: Simplify right side
   103,040.29x = 10,061,337,678.57
5. Step 5: Solve for x
   x = 10,061,337,678.57/103,040.29
6. Step 6: Final answer
   x = 97,644.69