Finding the Fourth Proportional to 69,801.86, 96,311.36 and 39,580.37

Step by Step Solution

1. Step 1: Write the proportion equation
   69,801.86 : 96,311.36 = 39,580.37 : x
2. Step 2: Convert to fraction form
   69,801.86/96,311.36 = 39,580.37/x
3. Step 3: Cross multiply
   69,801.86x = 96,311.36 × 39,580.37
4. Step 4: Simplify right side
   69,801.86x = 3,812,039,066.10
5. Step 5: Solve for x
   x = 3,812,039,066.10/69,801.86
6. Step 6: Final answer
   x = 54,612.28