Finding the Fourth Proportional to 70,185.57, 96,873.30 and 39,988.71

Step by Step Solution

1. Step 1: Write the proportion equation
   70,185.57 : 96,873.30 = 39,988.71 : x
2. Step 2: Convert to fraction form
   70,185.57/96,873.30 = 39,988.71/x
3. Step 3: Cross multiply
   70,185.57x = 96,873.30 × 39,988.71
4. Step 4: Simplify right side
   70,185.57x = 3,873,838,300.44
5. Step 5: Solve for x
   x = 3,873,838,300.44/70,185.57
6. Step 6: Final answer
   x = 55,194.23