Finding the Fourth Proportional to 124,433.62, 186,837.35 and 71,185.71

Step by Step Solution

1. Step 1: Write the proportion equation
   124,433.62 : 186,837.35 = 71,185.71 : x
2. Step 2: Convert to fraction form
   124,433.62/186,837.35 = 71,185.71/x
3. Step 3: Cross multiply
   124,433.62x = 186,837.35 × 71,185.71
4. Step 4: Simplify right side
   124,433.62x = 13,300,149,333.60
5. Step 5: Solve for x
   x = 13,300,149,333.60/124,433.62
6. Step 6: Final answer
   x = 106,885.50