Finding the Fourth Proportional to 124,418.10, 171,699.56 and 69,971.31

Step by Step Solution

1. Step 1: Write the proportion equation
   124,418.10 : 171,699.56 = 69,971.31 : x
2. Step 2: Convert to fraction form
   124,418.10/171,699.56 = 69,971.31/x
3. Step 3: Cross multiply
   124,418.10x = 171,699.56 × 69,971.31
4. Step 4: Simplify right side
   124,418.10x = 12,014,042,789.77
5. Step 5: Solve for x
   x = 12,014,042,789.77/124,418.10
6. Step 6: Final answer
   x = 96,561.86