Finding the Fourth Proportional to 71,128.96, 106,693.54 and 29,031.96

Step by Step Solution

1. Step 1: Write the proportion equation
   71,128.96 : 106,693.54 = 29,031.96 : x
2. Step 2: Convert to fraction form
   71,128.96/106,693.54 = 29,031.96/x
3. Step 3: Cross multiply
   71,128.96x = 106,693.54 × 29,031.96
4. Step 4: Simplify right side
   71,128.96x = 3,097,522,585.54
5. Step 5: Solve for x
   x = 3,097,522,585.54/71,128.96
6. Step 6: Final answer
   x = 43,547.98