Finding the Fourth Proportional to 69,770.54, 96,280.42 and 39,557.89

Step by Step Solution

1. Step 1: Write the proportion equation
   69,770.54 : 96,280.42 = 39,557.89 : x
2. Step 2: Convert to fraction form
   69,770.54/96,280.42 = 39,557.89/x
3. Step 3: Cross multiply
   69,770.54x = 96,280.42 × 39,557.89
4. Step 4: Simplify right side
   69,770.54x = 3,808,650,490.86
5. Step 5: Solve for x
   x = 3,808,650,490.86/69,770.54
6. Step 6: Final answer
   x = 54,588.23