Finding the Fourth Proportional to 70,017.57, 96,632.55 and 39,807.45

Step by Step Solution

1. Step 1: Write the proportion equation
   70,017.57 : 96,632.55 = 39,807.45 : x
2. Step 2: Convert to fraction form
   70,017.57/96,632.55 = 39,807.45/x
3. Step 3: Cross multiply
   70,017.57x = 96,632.55 × 39,807.45
4. Step 4: Simplify right side
   70,017.57x = 3,846,695,402.50
5. Step 5: Solve for x
   x = 3,846,695,402.50/70,017.57
6. Step 6: Final answer
   x = 54,939.00