Finding the Fourth Proportional to 124,814.35, 172,201.73 and 71,061.31

Step by Step Solution

1. Step 1: Write the proportion equation
   124,814.35 : 172,201.73 = 71,061.31 : x
2. Step 2: Convert to fraction form
   124,814.35/172,201.73 = 71,061.31/x
3. Step 3: Cross multiply
   124,814.35x = 172,201.73 × 71,061.31
4. Step 4: Simplify right side
   124,814.35x = 12,236,880,378.01
5. Step 5: Solve for x
   x = 12,236,880,378.01/124,814.35
6. Step 6: Final answer
   x = 98,040.65